Selena Gomez was quite the lucky lady as she celebrated her 20th birthday with boyfriend Justin Bieber, gal pals Demi Lovato and Taylor Swift, and hundreds of adoring fans and fellow celebrities at the 2012 Teen Choice Awards on Sunday.
The brunette pop star accepted the surfboard trophy for Choice Music Group for her band, Selena Gomez and the Scene, saying it was the best birthday present ever. Kevin Hart ("Think Like a Man"), who presented Gomez with the award alongside "The Vampire Diaries" star Nina Dobrev, urged fans at Universal Studios Hollywood's Gibson Amphitheatre to sing to Gomez -- despite her "Oh, no!" pleas.
The former "Wizards of Waverly Place" actress was then surprised with sparkler-topped Sprinkles cupcakes as everybody in the theater (and we're sure viewers at home, too!), including Swift and "iCarly's" Miranda Cosgrove, belted out "Happy Birthday!" At one point during the serenade, Gomez buried her face in her hands, clearly embarrassed but happy. The "Love You Like a Love Song" singer tried to blow out the sparklers afterward, but Hart signaled for her not to, so she wheeled the treats off the stage and headed back to her front-row seat next to Bieber. Too bad he didn't go onstage to give her a birthday kiss!
[Related: Pre-fame pics of Selena Gomez]
Earlier in the day, Gomez shared a photo of her birthday hairstyle -- wavy with a unique braid. She later styled her long hair slick and straight for the Teen Choice festivities, and wore a simple but chic Dsquared2 hot pink frock and Herve Leger sandals.
Happy birthday, Selena!
Watch Selena Gomez's birthday surprise: