Short & Sweet
updated 03/14/2011 AT 01:00 AM EDT
•originally published 03/14/2011 AT 01:00 AM EDT
in Zac Posen
She's all grown up! The Nickelodeon starlet, 17, shined at Elton John's AIDS Foundation fete, where she enjoyed a performance by Florence + the Machine.
in Zuhair Murad
Sticking to her signature sequins, the country superstar, 21, popped up at the Vanity Fair Oscar Party, where she met up with BFF Selena Gomez.
The Beastly star, 22, currently between boyfriends, danced with High School Musical costar Ashley Tisdale at the Elton John viewing party.