Selena Gomez Turns 21: Singer Shows Some Skin As She Celebrates With 'Birthday' Official Music Video WATCH)

Selena Gomez is officially 21 and the pop star is celebrating with a brand new music video.

"I wanted to celebrate my 21st birthday with all of you, so we made this video for us all to celebrate to," the former Disney star wrote about the new vid. "Thank you for all the love and support you have shown and continue to show me. I love you so much!"

The video—appropriately—is for Gomez's tune, "Birthday," an upbeat club jam that is totally different than the star's typical bubblegum pop tracks.

It shows Gomez at the center of a huge underground party complete with confetti, birthday crowns and fun dance moves. At the end, the whole crew even sings "Happy Birthday".

And if Gomez has any say, her actual birthday celebration will mirror the new video.

"I'm going to have a huge party, so I'm excited," Gomez told MTV back in May, admitting that her past birthday celebrations have been more low key. "I think my friends are more excited than I am because they are older than me and they are like, 'We can finally take you places!'"

Gomez was spotted celebrating two days before her July 22 b-day with friend and actress Lily Collins at the Roosevelt Hotel in Los Angeles. According to Hollywood Life, Gomez received an interesting gift—a leopard-print cake that featured a photo of herself with ex Justin Bieber.

Despite the pair's on-and-off relationship, a source insists Gomez was cool with it.

"She loves Justin, so he went on the cake," the source told the site.

Gomez later tweeted a photo of her big birthday celebration, which was attended by famous friends like "Pretty Little Liars" star Ashley Benson and "The Secret Life of the American Teenager's" Francia Raisa.

"Guess what... I'm 21. UM, #turnupNOW," she captioned the pic.

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