PICS: ET Birthday Babes

Click through our Birthday Babes gallery to find out when your favorite celebs celebrate their big day this year! 

Turns 37, April 2. Best known for his work in X-Men: First Class, Prometheus, and Inglourious Basterds, Fassbender received an Oscar nomination for his villainous role in the 2013 historical drama 12 Years a Slave.

Turns 52, April 2. Best known for playing Agent Phil Coulson in Iron Man, Thor, and other films in the Marvel Avengers franchise, Gregg has also tried his hand at directing, helming the 2008 dark comedy Choke.

Turns 53, April 2. Best known for playing Detective Elliot Stabler on NBC's Law & Order: Special Victims Unit for 12 years, Meloni recently became the star of the new Fox sitcom Surviving Jack.

Turns 32, April 1. Killam joined Saturday Night Live in September 2010, and joined Kenan Thompson in the Former-Nickelodeon-Star-Turned-SNL-Star Club. However, Killam's past in sketch television doesn't end there. Killam was also a former cast member on MadTV.

Turns 17, April 1. Best known for his roles in the 2008 Holocaust drama The Boy in the Striped Pajamas and the Oscar-nominated fantasy film Hugo, Butterfield most recently portrayed Ender Wiggin in the screen adaptation of the iconic young adult sci-fi novel Ender's Game.

Turns 43, March 31. Best known for playing a heroin addict in Trainspotting and young Obi-Wan Kenobi in the Star Wars prequels, McGregor has been nominated for two Golden Globes for his performances in Moulin Rouge! and Salmon Fishing in the Yemen.

Turns 71, March 31. Best known for his eccentric and critically acclaimed performances in films like Pulp Fiction, Catch Me If You Can, and True Romance, Walken is also an acclaimed musical theater performer and dancer, which he shows off in films like Pennies From Heaven, Hairspray, and his iconic Fatboy Slim music video performance for the song Weapon Of Choice.

Turns 28, March 28. Famous for her bizarre, art house music videos and larger-than-life performances, as well as elaborate outfits worn on and off the stage, she's sold 24 million albums and 125 million singles since her first album The Fame in 2008, and has been awarded five Grammy awards in six years.

Turns 44, March 28. Making a name for himself with films like Swingers, Old School, Dodgeball and Wedding Crashers, Vaughn is one of the tallest leading men in movies, clocking in at 6'5".

Turns 58, March 28. Reba is best known for her extensive country music career, releasing 26 studio albums and selling over 80 million records. Later in her career, she tried her hand at acting, appearing in the 1990 creature feature Tremors, and even headlining her own sitcom Reba, which ran for six seasons.

Turns 42, March 28. Best known for roles in the Three Flavours Cornetto Trilogy, a series of films he's made with actor and close friend Simon Pegg and director Edgar Wright, he also stars in the upcoming dance comedy Cuban Fever, which is set to hit U.S. theaters on April 11, 2014.

Turns 44, March 27. Carey set a music history record by having more No. 1 singles than any other solo artist with 18 songs reaching the top of the charts. Her song We Belong Together is her biggest single to date.

Turns 43, March 27. Best known for playing mystery writer and crime solver Richard Castle on the his ABC series Castle, Fillion is a hero in the sci-fi community for his performance in the short-lived cult classic FOX series Firefly.

Turns 39, March 27. Gaining fame as a vocalist for the massively-successful hip hop pop group The Black Eyed Peas, Fergie struck out on her own in 2006 with her debut solo album The Dutchess. Five singles from that album were in the top five of the Billboard Hot 100, with three of them reaching the top spot.

Turns 45, March 27. Perrette is best known for playing fan-favorite Abby Sciuto on the CBS crime procedural NCIS, for which she was nominated for a People's Choice Award.

Turns 29, March 26. Knightly began acting in minor roles in 1995 at the age of 10, and first gained widespread notoriety for her performance in the sports film Bend It Like Beckham in 2002.

Turns 38, March 26. Before becoming an actress, starring in films like Road Trip, Crank, The Butterfly Effect, and Just Friends, Smart was a model and studied ballet for over a decade.

Turns 42, March 26. Mann has frequently collaborated with and appeared in many films directed and produced by her husband Judd Apatow, including The Cable Guy, The 40-Year-Old Virgin, Knocked Up, Funny People, and This Is 40.

Turns 49, March 25. Parker is best known for playing Carrie Bradshaw on the hit HBO series Sex and the City, for which she was nominated for eight Primetime Emmys, and won twice. She was also nominated for seven Golden Globes for SATC, of which she won four.

Turns 67, March 25. The legendary English singer-songwriter has sold over 300 million records, along with releasing seven consecutive albums that became No. 1 best-sellers.

Turns 30, March 25. McPhee exploded into fame as a celebrated contestant on American Idol, and soon got into acting, starring in the NBC musical drama Smash.

Turns 41, March 24. Parsons is best known for his role as Sheldon Cooper on the CBS sitcom The Big Bang Theory, for which he has received three Golden Globe noms for Best Performance by an Actor in a Comedy or Musical Television Series, and has won once.

Turns 37, March 24. Chastain's first acting role came 10 years ago on an episode of ER. In the last decade, she's managed to get two Oscar nominations for her performances in Zero Dark Thirty and The Help.

Turns 40, March 24. Hannigan is perhaps best known for her work on the TV shows How I Met Your Mother and Buffy the Vampire Slayer, but also starred in a raunchier role in the main films in the American Pie franchise.

Turns 56, March 21. Best known for playing commissioner Gordon in Christopher Nolan's Dark Knight trilogy, Oldman was received his first Oscar nomination in 2012 for his role in the British spy thriller Tinker Tailor Soldier Spy.

Turns 52, March 21. Broderick is perhaps known for his iconic performance in Ferris Bueller's Day Off, for which he was nominated for a Golden Globe.

Turns 53, March 21. O'Donnell has had a long career as an actress, comedian and television host, and has earned herself six Primetime Emmy nominations, winning once.

Turns 56, March 20. Nominated for four Oscars, winning one for her performance in the 1994 film The Piano, Hunter provided the voice for Elastigirl in the Pixar masterpiece The Incredibles.

Turns 57, March 20. The director best known for Inside Man and Do The Right Thing, the latter of which earned him one of his two Oscar noms, Lee recently directed a film called Da Sweet Blood Of Jesus, which was financed through the crowdfunding site Kickstarter.

Turns 64, March 20. Hurt has been nominated for four Oscars, winning one for his performance in the 1986 drama Kiss Of The Spider Woman.

Turns 59, March 19. Best known for his many explosive action roles, including the iconic character John McClane from the Die Hard franchise, Willis is also an accomplished rock n' roll harmonica player.

Turns 67, March 19. Three of Close's first roles were The World According to Garp, The Big Chill and The Natural, each of which earned her an Oscar nomination. Close has been nominated for six Oscars in total.

Turns 35, March 18. Best known for being the lead singer of the band Maroon 5, and a judge on the NBC singing competition show The Voice, People magazine voted Levine the Sexiest Man Alive in November 2013.

Turns 44, March 18. This celebrated singer, television host and actress was nominated for an Oscar for her powerhouse performance in the musical Chicago.

Turns 25, March 18. Best known for her roles in Mirror Mirror and The Mortal Instruments: City of Bones, Lily is also the daughter of wildly-successful musician Phil Collins.

Turns 50, March 17. Best known for his praised roles in The West Wing and, more recently, Parks and Recreation, Lowe has been nominated for five Golden Globes, most recently for his performance in Behind The Candelabra.

Turns 63, March 17. Best known for his long string of anti-hero action roles in films like Escape From New York, The Thing and Big Trouble In Little China, Russell will also be appearing in the upcoming Fast & Furious 7.

Turns 28, March 14. Originally gaining fame for his acclaimed performance in the 2000 film Billie Elliot, Bell was recently cast to play The Thing in the reboot of the superhero franchise The Fantastic Four.

Turns 81, March 14. Best known these days for his role as Alfred in Christopher Nolan’s Dark Knight trilogy, Caine has been nominated for six Oscars, winning twice for his performances in Hannah And Her Sisters and The Cider House Rules.

Turns 29, March 13. Best known for his celebrated performance in the Sean Penn-directed drama Into The Wild, Hirsch most recently appeared in the tense war drama Lone Survivor.

Turns 42, March 13. This eleven-time Grammy nominated rapper-turned-actor has starred in several films, including Smoking Aces, LUV, and Date Night.

Turns 64, March 13. Currently starring in the critically acclaimed Showtime dramedy Shameless, Macy was nominated for an Oscar for his brilliant turn in the Coen Bros. film Fargo.

Turns 38, March 13. First gaining fame playing Steven Hyde on the long-running sitcom That '70s Show, Masterson currently stars on the TBS sitcom Men At Work.

Turns 46, March 12. Best known for playing District Attorney Harvey Dent, who becomes the villainous Two Face, in The Dark Knight, Eckhart was nominated for a Golden Globe for his critically acclaimed performance in Thank You For Smoking.

Turns 68, March 12. Daughter of iconic singer and actress Judy Garland and the legendary director Vincent Minnelli, Liza has been nominated for two Oscars, winning one for her role in Cabaret.

Turns 43, March 11. Best known for his work as a daredevil in the Jackass film and television series, Knoxville has also had a rich acting career in movies like Men In Black 2 and The Dukes Of Hazard.

Turns 45, March 11. Howard was nominated for an Oscar for portraying DJay, a pimp and a drug dealer with dreams of being a big time rapper, in Hustle & Flow.

Turns 25, March 11. Best known for playing Pavel Chekov in J.J. Abrams' Star Trek movie series, Yelchin was born in Leningrad, Russia.

Turns 52, March 11. As an actor, Berg is best known for his role on the medical drama Chicago Hope, but he is also a very successful director. He's helmed projects such as Smoking Aces, Lone Survivor and perhaps his most popular, Friday Night Lights.

Turns 30, March 10. Breaking big with a lead role on the popular FOX medical drama House, Wilde is currently engaged to former SNL star Jason Sudeikis, and they are currently expecting their first child.

Turns 43, March 10. Best known for his critically acclaimed role on AMC's Mad Men, Hamm is also a frequent host and cameo performer on SNL.

Turns 37, March 10. Best known for his 2013 mega-hit Blurred Lines, Robin Thicke is the son of Canadian actor Alan Thicke, famous for his lead role on the family sitcom Growing Pains, and actress Gloria Loring

Turns 31, March 10. Rising to fame by winning the fourth season of FOX's American Idol, Underwood has since won six Grammys.

Turns 56, March 10. First gaining massive fame for her revealing performance in the erotic thriller Basic Instinct, Stone was nominated for an Oscar for her role in the 1995 crime drama Casino.

Turns 44, March 7. Weisz's first high-profile role was playing Evelyn in the 1999 action-adventure The Mummy Returns. She went on to win an Oscar for her performance in The Constant Gardener.

Turns 58, March 7. Acting for many years on television and in film, Cranston became a household name with his performance in the critically acclaimed AMC drama Breaking Bad.

Turns 40, March 7. Fischer is best known for playing Pam Halpert on the popular NBC comedy The Office, for which she was nominated for a Primetime Emmy.

Turns 34, March 7. Best known for playing Donna Pinciotti on the long-running FOX sitcom That '70s Show, Prepon also plays Alex Vause on the popular Netflix original series Orange Is the New Black.

Turns 43, March 7. Nominated for a Golden Globe for his performance in Shattered Glass, Sarsgaard most recently appeared on the TV crime drama The Killing.

Turns 47, March 6. Britton has had an illustrious television career, appearing on the beloved shows Friday Night Lights, American Horror Story and, most recently, Nashville. She's been nominated for four Primetime Emmys for her work on those programs.

Turns 40, March 5. Mendes' breakthrough role was playing opposite Denzel Washington in the cop drama Training Day. Before acting, she was working at the mall chain restaurant Hot Dog on a Stick.

Turns 40, March 5. Best known for playing Eric Murphy on the hit HBO comedy Entourage, Connolly's first big television role was on The WB's Unhappily Ever After.

Turns 56, March 4. Best known for playing Debra on the hit CBS sitcom Everybody Loves Raymond, Heaton received a star on the Hollywood Walk of Fame in May, 2012.

Turns 32, March 3. Jessica Biel's first major screen role was that of Mary Camden in the hit show 7th Heaven, which is still considered the longest-running family drama in the history of television.

Turns 44, March 3. Best known for playing Claire Dunphy on Modern Family, Bowen has been nominated for four consecutive Golden Globes for that role, winning twice in 2011 and 2012.

The James Bond actor turns 46 on March 2, 2014. Daniel Craig's acting career started early. He moved to London when he was 16 to join the National Youth Theatre.