ET has the latest on your pre and post GRAMMY celeb sightings!
Jay Z and Rihanna shared a candid handshake at the annual Roc Nation pre-GRAMMY brunch, celebrating with a Rolodex of celebrity guests, including Big Sean, Adrien Brody, Nick Jonas and Kelly Rowland in Beverly Hills on Feb. 11.
From one pre-GRAMMY party to the other, Sean 'Diddy' Combs hosted his own star-studded GRAMMY's Weekend After Hours party at his private residence in Los Angeles serving Ciroc vodka and DeLeon Tequila, where Mary J. Blige posed for a pic with the rapper.
Kourtney Kardashian, Corey Gamble and French Montana were also spotted enjoying the night out.
Cee Lo Green and his new alter ego, Gnarly Davidson made an appearance at Primary Wave's annual pre-GRAMMY party on Feb. 11 on the luxurious rooftop of the London Hotel in Los Angeles, while Moesha star Brandy Norwood, brother Ray J and his wife Princess Love celebrated her 38th birthday and gathered several guests around to sing a rendition of Happy Birthday to her.
WATCH: CeeLo Green Paints Himself Gold for GRAMMYs 2017
Actress and model Jaime King indulged in some yummy treats while joining McDonald's in celebration of the Year in Music and the new Grand Mac and Mac Jr. sandwiches on Feb. 9 at The Peppermint Club in Los Angeles.
Brazilian model Camila Alves partnered with Feeding America in Irvine on Feb. 10 and helped donate an entire truckload of Yummy Spoonfuls products to children in need through the Second Harvest Food Bank of Orange County.
In New York, designer Christian Siriano modeled a pose with Alicia Silverstone at his F/W17 fashion show after party in SoHo’s new hotspot The Blond Bar.
While Nick Cannon broke the news on social media on Tuesday of his new born son, Golden "Sagon" Cannon, the 36-year-old flashed a peace sign for cameras at celebrity hotspot Catch LA in West Hollywood, before welcoming his third child.
NEWS: Nick Cannon Welcomes Third Child With Ex-Girlfriend Brittany Bell
Singer Skylar Grey showed her support on the red carpet at the GRAMMY Awards by participating in Absolut's #refreshthetalk campaign wearing a LED clutch to inspire meaningful conversations on Feb. 12 in Los Angeles.
Actress Bella Thorne turned heads later that day at Monster's Ultimate GRAMMY celebration donning an all-pink ensemble with an embellished cat ear hairband for the premiere of Monster Ravebox in Los Angeles.
Lindsay Lohan and Simon Hammerstein, owner of The Box, celebrated the cabaret nightclub's 10-year anniversary as the notoriously naughty hotspot in New York City on Feb. 13.
The invite-only event drew an eclectic set including it girl Zoë Kravitz, actors Susan Sarandon and Josh Lucas who reveled until the wee hours at the theatre.
Earlier that day, actresses Catherine Zeta-Jones, Susan Sarandon, and Jessica Lange made quite the appearance at SiriusXM's Town Hall in New York City to promote their new drama series Feud: Bette and Joan.
On Feb. 16 artist Jidenna performed at Pepsi's The Sound Drop at Kola House in New York City while celebrating the release of his debut album The Chief.
Later in the week, Beats by Dre and LeBron James hosted NBA All-Star Weekend party in New Orleans on Feb. 18, while Lil Wayne and Hot Boys took to the stage in an epic reunion.
The Broadway smash Waitress announced that the hit show's composer and lyricist, Sara Bareilles will make her acting debut on March 31 as Jenna Hunterson, the lead role for a limited engagement through June 11.
Lovebirds Scott Stapp and wife Jaclyn Stapp took a romantic getaway to celebrate their 11th wedding anniversary and Stapp's two years of sobriety at the AAA Four Diamond Moon Palace Jamaica Grande in Ocho Rios.
Vampire Diaries actress Kat Graham celebrates the release of her new music with a mini getaway to the Live Aqua Spa Resort in Cancun over Presidents Day weekend.
Check out even more star sightings in the gallery below.
