Selena’s all grown up! While wearing tiny leather hotpants on ‘The Tonight Show With Jay Leno’ on July 23, Selena dished about her first legal drink and confirmed her plans for an ‘epic’ birthday party on July 27, which HollywoodLife.com told you about first!

Selena Gomez told Jay Leno that her first legal drink since turning 21 was a shot of Jack Daniels whiskey. Unfortunately for the sexy singer, she was still reeling from the side effects more than 24 hours later, as she appeared on The Tonight Show With Jay Leno on July 23.

Selena Gomez Hungover On ‘Jay Leno’ — Singer Took Shots Of Whiskey On Birthday

“And how many of those did you have?” Jay asked Selena about the number of shots consumed on her birthday, July 22.

“I don’t remember,” she replied, before playfully scrunching up her face and laughing.

“Are you hungover today, was it a big party?” he asked.

“A little bit, it was fun though, it was good,” Selena said.

Selena has already celebrated her birthday twice — she attended gal pal Julianne Hough‘s 25th birthday party on July 20, and then she celebrated with a taco cake with her friends the following night, on July 21.

Selena Gomez Confirms ‘Epic’ Birthday Party

Meanwhile, the singer, who is promoting her new Stars Dance album, mentioned a huge party she’s having on Saturday, July 27, which HollywoodLife.com told you about first!

“I’ll have a birthday party this weekend but I had a dinner with my friends, the party’s going to be kind of a gypsy theme, I’m excited,” Selena said. “We’re gonna have skirts and tattoos and belly dancers. It’ll be kind of the whole thing, It’ll be fun.”

What do YOU think, HollywoodLifers? How did YOU celebrate your 21st birthday? Do you think Justin Bieber will go to Selena’s party this weekend?

WATCH: Selena Gomez Takes 21st Birthday Whiskey Shots!

— Chris Rogers
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More Selena Gomez News:

1. Selena Gomez’s 21st Birthday — Celebrate Her Amazing Year In Pics
2. Selena Gomez Debuts Sexy New Hairstyle — Will Justin Bieber Love It?
3. Selena Gomez’s Sexy ‘Slow Down’ Video Leaks — Watch