Jordan Strauss / Invision/AP 1 / 19
Jordan Strauss / Invision/AP 1 / 19

A memorable 21st birthday (or should we say "not?") for Selena Gomez! Appearing on Jay Leno's show on Tuesday, the just-legal "Come & Get It" singer told the late-night host that she celebrated turning 21 on Monday with a "shot of Jack Daniels whiskey."

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Asked how many she had, the former Disney star laughed, "I don't remember." 

Saying she was "a little bit" hungover after her celebration at Bagatelle restaurant in West Hollywood, Calif., and an afterparty with friends at Beacher's Madhouse, the star shared the rest of her upcoming birthday plans.

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"I'll have a birthday party this weekend, [it's] going to be kind of a gypsy theme, I'm excited," she said. "We're gonna have skirts and tattoos and belly dancers … It'll be so fun."

The "Spring Breakers" actress, whose album "Stars Dance" dropped July 23, recently told Ryan Seacrest during an E! special that, "I'm not the one who wants to shed the quote-unquote Disney image."

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Nevertheless, Gomez, who confirmed to Seacrest that she is no longer dating 19-year-old Justin Bieber, is no doubt enjoying adulthood. "I could not have asked for a better birthday," she tweeted on July 22. "This one will be remembered forever."

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