Happy 21st birthday, Selena Gomez!

OK, so it's not Shakespeare.

But Selena Gomez's homage to herself for her 21st birthday, aptly named Birthday, is pretty catchy. It's like a Happy Birthday club anthem. According to MTV News, in the wee hours of Sunday night/Monday morning, the pop singer went lo-fi by taking a group of her besties to a graffiti-decorated warehouse to dance suggestively. All the fun, in sync with our sharing-is-caring attitude, is captured on video.

As she tosses her enviously bouncy hair around, she urges fans to "tell 'em that it's her birthday when I party like that," and to "blow your dreams away with me."

Birthday is the second single off her album Stars Dance and the follow-up to Come and Get It.