VIDEO: Selena Gomez Kicks Off Her 21st Birthday Celebration with Friends

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Today, she's officially allowed to consume adult beverages, and tomorrow, she drops her first album. Selena is celebrating her 21st birthday she posted a video to her YouTube page early this morning with a shout-out to her fans:

 "I wanted to celebrate my 21st Birthday with all of you, so we made this video for us all to celebrate to. Thank you for all the love and support you have shown and continue to show me."