Gone is the Disney princess image! Selena Gomez unleashes her inner rebel, rocking devil horns to mark her birthday alongside her friend Lily Collins.

Birthday queen: Selena Gomez had a blast on Saturday night as she rang in her highly anticipated 21st birthday at the iconic Hollywood Roosevelt Hotel, accompanied by her close friend, Lily Collins.

Selena breaks free from her innocent reputation and embraces her inner vamp to commemorate her special birthday.

Mischievous Imp: The talented musician and performer, who spiced up her little black dress with fiery devil horns and a luxurious black feather stole, radiated joy as she gleefully accepted a delectable cake.

Experiencing shyness: The beautiful brunette, whose actual birthday falls on the upcoming Monday, covered her face bashfully while her best friend Lily chauffeured her to the glamorous Hollywood hotspot where her party awaited.

Fresh Style: The celebrity stepped out of the fashionable hair salon in West Hollywood on July 19th sporting sleek, straight hair – a sophisticated transformation that adds to the tween idol’s maturing image.