From Hollywood to New York City, celebrities are living their best lives on both coasts and everywhere in between. Click through the gallery to see some of the best and hottest events as autumn begins.
The brunette beauty looked red hot at Valentino's Paris Fashion Week show on Sept. 29.
The "Push" rapper was ready to get down to business as she made her way to the Thom Browne show during Paris Fashion Week on Sept. 29.
What a muggle delight! The "Bad Guy"-Harry Potter mashup came to life when Eilish met Harry Potter and the Cursed Child, Parts 1 & 2 star James Snyder backstage at NYC's Lyric Theatre after the actor's Broadway show on Sept. 29.
Liam Payne and Rita Ora
The "For You" collaborators reunited during Paris Fashion Week at the ESCADA x RITA ORA capsule launch event on Sept. 29.
She's normally on the runway, but Hadid was the one fangirling from the front row at the Each x Other SS20 show during Paris Fashion Week on Sept. 29.
The Duke of Sussex visited the Nalikule College of Education in Lilongwe, Malawi, on day seven of his and Meghan Markle's royal tour of Africa.
The "Nights Like This" singer had quite the night indeed at the Overwatch League Grand Finals 2019 in Philadelphia on Sept. 29.
The former Democratic presidential candidate met Caissie Levy (Elsa) and Patti Murin (Anna) backstage at the Broadway production of Frozen on Sept. 29.
Kim Kardashian and Kanye West
The Jesus Is King rapper couldn't contain his enthusiasm at Sunday Service with his wife, their two oldest kids -- son Saint and daughter North -- and Marvet Britto at the Greater Allen A.M.E. Cathedral of New York in the borough of Queens on Sept. 29.
The former Miss Universe was a sheer delight in ruffles outside the Ralph & Russo show in Paris on Sept. 29.
The former president donned a dapper charcoal suit and pale blue button-down shirt while speaking onstage at the opening of the 2019 Bits & Pretzels Founders Festival, a three-day financial investment event, in Munich, Germany, on Sept. 29.
The "Nightmare" singer put her back into it at the Andreas Kronthaler for Vivienne Westwood SS20 show in Paris on Sept. 28.
JT played his fourth hole tee shot during the third round of the Alfred Dunhill Links Championship in St. Andrews, Scotland, on Sept. 28.
Joaquin Phoenix and Rooney Mara
The couple couldn't stop smiling at the Joker premiere in Hollywood on Sept. 28.
The actor and environmental activist took a moment to look out at the crowd before speaking onstage during the 2019 Global Citizen Festival: Power the Movement in New York City on Sept. 28.
Outfitted in a custom, iridescent MCM X Misa Hylton look, the GRAMMY winner sang her heart out during the same Central Park festival.
Nikki Reed and Joshua Jackson
The actors came together for the Environmental Media Association's 2nd Annual Honors Benefit Gala in Pacific Palisades, California, on Sept. 28.
Becca Kufrin and Katie Morton
It was a girls night out for Becca Kufrin, Katie Morton, Krystal Nielson, Ashley Laconetti, Tia Booth and Caelynn Miller-Keyes who stepped out to celebrate Lulus' first pop-up shop in Los Angeles on Sept. 27.
The actress rocked a stylish dress and sandals as she stepped out in New York City's Upper West Side neighborhood on Sept. 28.
Millie Bobby Brown
Hugs for everyone! The Stranger Things star enthusiastically embraced her fans at a celebration for the launch of her new beauty brand, florence by mills, at a Boots store in London on Sept. 28.
Tracy Morgan and Eddie Murphy
The funny men perfected their poses at the Los Angeles premiere of Dolemite Is My Name on Sept. 28.
The "Broken" singer was mad for plaid during her performance at Equality California’s 20th Los Angeles Equality Awards at the JW Marriott in downtown Los Angeles on Sept. 28. The evening celebrated 20 years of fighting for LGBTQ civil rights, equality and social justice in California and included honors for Transparent's Jill Soloway, who took home the Equality Visibility Award.
Helen Mirren, Eva Longoria, Aishwarya Rai, Camila Cabello and Amber Heard
The gorgeous ladies posed on the runway during the Le Defile L'Oreal Paris during Paris Fashion Week on Sept. 28.
Megan Thee Stallion
The "Hot Girls Summer" rapper was a total star during her Rolling Loud Bay Area 2019 set on Sept 28, where she even had a "Simon Says" dance party with fans on stage.
Bono and Penelope Cruz
The U2 frontman presented the Donostia Award to Cruz during the 67th San Sebastian International Film Festival in Spain on Sept. 27.
The Aquaman star giddily turned the camera on photogs while out in New York City on Sept. 27.
Kirsten Dunst and Jesse Plemons
The cute couple made the New York Film Festival premiere of The Irishman into a date night, mingling with friends and peers at the after-party at New York City's Tavern on the Green on Sept. 27.
The "Señorita" singer was super upbeat as she arrived at the NRJ radio studio in Paris on Sept. 27.
In case you weren't sure it was him, the 39-year-old actor wore the T-shirt version of a name tag to the season 10 premiere of Adult Swim's Robot Chicken in Los Angeles on Sept. 27.
The Deuce star chatted with fellow partygoers at the Campari-hosted opening night of the 57th New York Film Festival in NYC on Sept. 27.
The 22-year-old model snuck in an acupuncture session in Beverly Hills on Sept. 27, ahead of her big wedding weekend with Justin Bieber.
The Duke of Sussex walked through a minefield to see the work being done by charity Halo Trust on landmine clearance in Dirico, Angola, on Sept. 27. Harry is on an official royal tour of Africa with his wife, Meghan Markle, and their son, Archie.
Gigi Hadid, Rihanna and Bella Hadid
The model sisters partied with RiRi at the Fenty after-party at the 1 OAK Paris Pop-Up during Paris Fashion Week on Sept. 26.
The Hustlers star looked white hot outside an Ulta Beauty store in New York City on Sept. 26, where she attended a perfume launch party.
The Voice coach was a vision in baby blue at the Gala for the Global Ocean, hosted by H.S.H. Prince Albert II of Monaco, at the Opera of Monte-Carlo on Sept. 26.
Sarah Jessica Parker
This is what neon dreams are made of! SJP was literally glowing when she arrived at the 8th Annual New York City Ballet Fall Fashion Gala at New York City's Lincoln Center on Sept. 26.
True's mama kept herself from a wardrobe malfunction as she exited lunch at Il Cielo in Beverly Hills on Sept. 26.
So Gucci! The mom of three stepped out in New York City on Sept. 26 rocking a long cardigan from the fashion house.
Olivia Culpo and Halsey
The gorgeous gals were twinning in black-and-white looks at the Redemption show during Paris Fashion Week on Sept. 26.
The British actress took a quick look back while out in New York City on Sept. 26.
Brad Falchuk, Ben Platt and Gwyneth Paltrow
Paltrow's husband supported his wife and her co-stars at the premiere after-party for The Politician in New York City on Sept. 26.
Lucy Boynton, Julia Schlaepfer, January Jones and Zoey Deutch
The ladies of The Politician posed together at the Netflix show's season one premiere.
The "Pynk" singer spoke onstage during Global Citizen Presents Global Goal Live: The Possible Dream at St. Ann’s Warehouse in New York City on Sept. 26.
The Bachelorette star stepped out for the celebration of GUESS' new Seductive Noir fragrance at No Vacancy in Los Angeles on Sept. 26.
The Star Trek star recreated the famous Abbey Road cover at a 50th Anniversary celebration of The Beatles' famous album in Hollywood on Sept. 26.
The Riverdale star donned a khaki-hued button-up dress at the second annual L'Attutude Conference - LatiNExt Live in San Diego on Sept. 26.
Neil Patrick Harris
The How I Met Your Mother alum goofed around backstage with the stars of OPIUM at the Cosmopolitan of Las Vegas on Sept. 26.
Clad in a navy blue suit, the Dawson's Creek alumna made a glam turn in New York City on Sept. 26.
She's truly a dancing queen! The pop icon hit the stage in Berlin, Germany, on Sept. 26.
The Big Little Lies star helped Van Cleef & Arpels celebrate its redesigned Beverly Hills boutique on Sept. 26.
Maude Apatow, Kaitlyn Dever, and Sadie Sink
The young Hollywood starlets all looked prim and proper at the Gucci Zumi Handbag Collection celebration in Chicago on Sept. 26.
The fashionista donned an all-black ensemble to check out Peninsula Paris' global contemporary art program, Art in Resonance, during Paris Fashion Week on Sept. 26.
Prince William and Kate Middleton
The Duke and Duchess of Cambridge greeted onlookers at the naming ceremony for Britain's new polar research ship, the RRS Sir David Attenborough, in Birkenhead, England, on Sept. 26.
The California girl rocked a sporty look as she left her hotel during Paris Fashion Week on Sept. 26.
The Goop founder chatted about her career pivot during an Advertising Week New York panel in Manhattan on Sept. 26.
The British singer wasn't afraid to rock a bold pattern as she got ready to film the U.K. version of The Masked Singer in London on Sept. 26.
Natalie Portman and Jon Hamm
The Lucy in the Sky stars got the giggles at their film's Los Angeles premiere on Sept. 25.
The 29-year-old actress was anything but mellow yellow in a bold banana-hued suit at the Will Rogers 78th Annual Pioneer Dinner, in Beverly Hills on Sept. 25, where her Charlie's Angels director, Elizabeth Banks, was being honored.
Happy birthday, Fresh Prince! Smith rang in his 51st with a birthday cake on the Gemini Man red carpet in Budapest, Hungary, on Sept. 25.
The Modern Family star posed for a pic while exploring Madrid, Spain, on Sept. 25.
Selena Gomez and Meghan Trainor
The duo came together to celebrate Charm La'Donna at Hennessy V.S.O.P Privilege Toast’s to her Choreographer of the Year Award at Los Angeles' Hollywood Roosevelt on Sept. 25.
Jonathan Van Ness
The Queer Eye star was sitting pretty as he discussed his new book, Over the Top: A Raw Journey to Self-Love, at Build Studio in New York City on Sept. 25.
The spotlight was on the pop star during her private concert for Verizon Up Members at the Fillmore Miami Beach in Florida on Sept. 25.
Sequined stunner! The Day Shall Come star waved to the audience before sitting down to chat on Late Night With Seth Meyers on Sept. 25.
The Judy star stunned in a split-sleeve LBD as she headed onto the Late Show With Stephen Colbert's NYC set on Sept. 25.
The America's Got Talent judge threw up a peace sign while out in Los Angeles in workout gear on Sept. 25.
The "Make Me Feel" singer hit the high notes in front of a sold-out crowd at The Rooftop at Pier 17 in New York City on Sept. 25.
Audrina Patridge and Jamie Chung
The reality star and the Gifted actress looked stoked to be in each other's company at Boohoo.com's Fall Kick-Off Party in Los Angeles on Sept. 25.
The Sports Illustrated Swimsuit model got her sweet tooth on at the grand opening of Black Tap Herald Square in New York City on Sept. 25.
The "Go" rapper spoke out at the National Rally to End Gun Violence at the U.S. Capitol in Washington, D.C., on Sept. 25. The rally on the West Lawn, organized by the Newtown Action Alliance, called on the president and Republicans to pass gun safety laws.
The Duchess of Sussex couldn't stop smiling as she met some of the folks at the mothers2mothers organization in Cape Town, South Africa, on Sept. 25.
So bright, she's got to wear shades! Between her roots, funky sunglasses and oversized graffiti tee, the "Bad Guy" singer sported an eye-catching amount of neon green as she headed to Saturday Night Live rehersals in New York City on Sept. 25.
The Good Place actress wasn't afraid to rock a bold pattern at WE Day UN 2019 at the Barclays Center in Brooklyn, New York, on Sept. 25.
The Hills: New Beginnings star suited up for AllBright West Hollywood's grand opening party on Sept. 25. Icona Pop performed at the club, where Jamie Chung, Rebel Wilson and Charlotte McKinney were among the celebs mingling.
The actress-producer looked sleek in an all-black ensemble as she made her way to the Guy Laroche show during Paris Fashion Week on Sept. 25.
The fashion designer -- who recently revealed she'd lost 100 pounds since the birth of her third child, daughter Birdie, in March -- wore an eye-catching bright orange coat for business meetings in New York City on Sept. 25.
Karlie Kloss and Kaia Gerber
The models stepped out together for the Karl Lagerfeld exhibition tribute during Paris Fashion Week on Sept. 25.
The 24-year-old model paid her respects at the same Karl Lagerfeld tribute.
The mom of two had a backlit glow shining on her as she took a peek down the street after meeting a friend for coffee at Alfred Coffee in West Hollywood on Sept. 24.
Gold standard! The "Juice" singer was feeling herself during her Radio City Music Hall performance in NYC on Sept. 24.
The Ad Astra star was an excellent listener during the Breitling Summit in Los Angeles on Sept. 24.
Meghan Markle and Prince Harry
With bouquets of flowers in their hands, the Duke and Duchess of Sussex strolled hand in hand during Heritage Day celebrations in Cape Town's Bo Kaap district on Sept. 24, as part of the couple's royal tour of South Africa.
Bella Hadid and Jorja Smith
The California girl and the English singer had a model moment at the Dior Beauty dinner during Paris Fashion Week on Sept. 24.
The Stumptown star was in an upbeat mood as she headed into the Good Morning America studio in NYC on Sept. 24.
The Oscar winner posed in front of the Eiffel Tower at the Saint Laurent show during Paris Fashion Week on Sept. 24.
The sunglasses-clad actress flashed a smile as she headed into a Barnes & Noble in New York City for a book signing for her new memoir, Inside Out, on Sept. 24.
Kaitlin Olson, Danny DeVito, Rob McElhenney and Charlie Day
Glenn Howerton may not have been able to make it to the season 14 premiere of It's Always Sunny in Philadelphia in Hollywood on Sept. 24, but a terrifying mannequin look-alike sure did!
The "Misery" singer was glowing as she headed out of the New York City studio of The View on Sept. 24.
He loves golf this much! The "Say Something" singer was full of enthusiasm during the Dunhill Links Media Access Day in St. Andrews, Scotland, on Sept. 24.
Pleats, please! The Dark Phoenix actress was back in black at the Christian Dior SS20 show during Paris Fashion Week on Sept. 24.
Kim Kardashian West
Matrix moves! The Keeping Up With the Kardashians star strutted her stuff in a black tank and leather pants en route to lunch in Los Angeles on Sept. 24.
The Judy star gave off major Old Hollywood vibes after her Good Morning America visit in NYC on Sept. 24.
The Peppermint star took a casual stroll through Los Angeles on Sept. 23.
The "Nightmare" singer made a colorful sartorial statement ahead of her GRAMMY Museum performance in Los Angeles on Sept. 23.
The Charlie's Angels star was all about the '90s grunge vibes as she headed into Jimmy Kimmel Live!'s Los Angeles studio on Sept. 23.
Rumer Wills, Demi Moore, Tallulah Willis and Scout Willis
Family matters! Moore was supported by her daughters at her Inside Out book party in Los Angeles on Sept. 23.
The retired soccer pro shared a laugh with students at the launch of the BFC fashion studio apprenticeship, for which he is the ambassadorial president, at Prendergast Vale School in London on Sept. 23.
Clad in an olive green The Kooples jumpsuit, black Sam Edelman heeled boots and a circle handbag by Rebecca Minkoff, the Victorious alum turned the streets of Manhattan into her very own runway on Sept. 23.
Hannah Brown and Lauren Alaina
Animal instincts on point! The Dancing With the Stars contestants both rocked cheetah print to the DWTS viewing party at Mixology 101 LA on Sept. 23.
The Katy Keene star stayed in costume as she took her dog, Elvis, for a walk on set in the Big Apple on Sept. 23.
Jenna Dewan and Steve Kazee
The couple enjoyed a date night at WWE's Monday Night Raw at the Chase Center in San Francisco on Sept. 23, just a few hours before news broke that they are expecting their first child together.
Jimmy Fallon and Megan Thee Stallion
PSL problems! The late-night talk show host and the "Hot Girl Summer" rapper made "Hot Girl Fall" a thing on the Sept. 23 episode of The Tonight Show Starring Jimmy Fallon.
Blake Shelton would be proud! The Voice coach channeled her inner cowgirl during a busy press day in New York City on Sept. 23.
Meghan Markle and Prince Harry
The Duke and Duchess of Sussex greeted onlookers at the District 6 Museum and Homecoming Centre in Cape Town during their royal tour of South Africa on Sept. 23.
Maren Morris and Sheryl Crow
The singers performed together at Nashville's famed Ryman Auditorium on Sept. 23.
Vroom vroom! The Mad Men alum hit the road on his motorbike in Los Angeles on Sept. 23.
Marilyn Manson and Jeffrey Dean Morgan
The shock rocker and the actor embraced on the red carpet for the season 10 special screening of The Walking Dead in Hollywood on Sept. 24.
The supermodel oozed confidence in a leopard print column dress as she headed to a Paris Fashion Week party at the Hotel de Crillon on Sept. 23.
Morena Baccarin and Ben McKenzie
The Gotham stars and real-life couple made one stunning pair at the premiere of Porgy and Bess during the Metropolitan Opera Opening Night Gala in New York City on Sept. 23.
Alex Morgan and Megan Rapinoe
The World Cup champs got all glammed up at the Best FIFA Football Awards 2019 in Milan, Italy, on Sept. 23.
Plaid perfection! The Transparent star rocked a pretty pink suit for a chat on "Radio Andy" at the SiriusXM Studios in New York City on Sept. 23.