Selena Gomez Celebrates Her 21st Birthday Eve With Caffeinated Werk!

What does it take to be a successful mega-starlet!?

A little work before play, even if it’s your 21st B-Day!

Selena Gomez was spotted on Sunday leaving a studio in Burbank, CA to squeeze in one final sesh before b-day partying tonight!

The Come and Get It popstar rocked a pair of high Stuart Weitzman gladiator sandals and enjoyed an ice cold Starbucks drank!

What should the singer’s first legal cocktail be?

Perhaps a bieberlini!

LOLz!

Happy Birthday Selly!

[Image via AKM-GSI.]