Scott Eastwood
Vegas baby! The actor enjoys a belated birthday celebration inside the OMNIA Nightclub at Caesars Palace.
Jack Antonoff
Give it up for the birthday boy! The lead singer of Fun. receives special messages from girlfriend Lena Dunham and her BFF Taylor Swift on his big day.
Nina Agdal
The model celebrates her 23rd birthday in the Lacoste Suite at the Miami Open.
Justin Bieber
Two weeks after turning 21, the "Baby" singer heads to OMNIA Nightclub inside Caesars Palace Las Vegas for a separate party.
Kellan Lutz
The Twilight hunk celebrates his 30th birthday with his pal Jonas Tahlin and a big Absolut Elyx cocktail.
Reggie Bush
The NFL stud celebrates his 30th birthday by enjoying the music of DJ David Guetta inside XS Nightclub at Wynn Resort Las Vegas.
Jennifer Lopez
In honor of Max and Emme's birthday, the "Dance Again" singer and Marc Anthony come together to throw an epic party.
Chloë Grace Moretz
What better way to celebrate turning 18 than with a trip to Jamaica?
Lizzie Rovsek
The Real Housewives of Orange County star celebrates her special day at Twenty Eight Restaurant & Lounge with her co-stars. "What a perfect night!" she wrote on Instagram. "Thank you to everyone that made my birthday special."
Alan Cumming
The colorful Cabaret star shared this Speedo-clad pic of himself celebrating his 50th at Studio 54!
Betty White
At 93-years-young, the Hot in Cleveland star still loves a few surprises on-set.
Kyle Richards
The Real Housewives of Beverly Hills star heads to The Palm Restaurant in Beverly Hills to celebrate her birthday.
Steve Harvey
Wendy Raquel Robinson is just one of the heartfelt surprises featured on the talk-show host's tearful birthday show.
Skrillex
LOL! Gary Busey presents the deejay with a cake during a Svedka-hosted surprise party in L.A.
Cody Simpson
Look who's turning the big 18! The singer celebrates a milestone at The Nice Guy with close friends including Miley Cyrus and Gigi Hadid.
John Legend
It's a star-studded birthday party as Kim Kardashian, Kanye West, Chrissy Teigen and more head to CATCH in New York City to celebrate the "All of Me" singer.
Cash Warren
#happybirthdayCash! Today we celebrate my ❤️ @cash_warren!," his wife Jessica Alba shared on Instagram. "getting ready for a night of games- Jammie's and pizza"
Monica
The singer helps her son Romelo celebrate his birthday at Monster Jam where the fam had a celeb run-in with Kenny Rogers!
Hailee Steinfeld
The actress celebrates her 18th birthday with Joey King, members of Fifth Harmony, Austin Mahone and others in Los Angeles.
Britney Spears
The "Circus" singer is treated to a special birthday cake designed by boyfriend Charlie Ebersol.
Lil Wayne
In honor of his daughter's Sweet 16, the rapper gifts Reginae Carter a brand new BMW, Ferrari and Nicki Minaj concert.
The Game
It's a Hollywood masquerade at the Supper Club as Khloé Kardashian celebrates her friend's special day.
Sarah Hyland
The Modern Family star celebrates turning 24 with Kelly Osbourne, Taylor Swift, Lorde and more famous BFFs.
Kaley Cuoco-Sweeting
Surprise! The Big Bang Theory star gets the shock of a lifetime when her husband throws a birthday party at Nobu restaurant in Malibu.