What does it take to be a successful mega-starlet!?
A little work before play, even if it's your 21st B-Day!
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!
Happy Birthday Selly!
[Image via AKM-GSI.]