1 of 21 Kevin Winter/Getty Images
Vanessa Hudgens and Zac Efron
2 of 21 Jason Merritt/Getty Images
3 of 21 Jeff Kravitz/FilmMagic.com
4 of 21 Kevin Winter/Getty Images
5 of 21 Jeff Kravitz/FilmMagic.com
6 of 21 Kevin Mazur/WireImage.com
7 of 21 Jeff Kravitz/FilmMagic.com
8 of 21 Jeff Kravitz/FilmMagic.com
9 of 21 Kevin Mazur/WireImage.com
10 of 21 Jeff Kravitz/FilmMagic.com
11 of 21 Kevin Winter/Getty Images
Jaden Smith and Jackie Chan
12 of 21 Kevin Winter/Getty Images
13 of 21 Jeff Kravitz/FilmMagic.com
Sky Blu and Redfoo of LMFAO
14 of 21 Jason Merritt/Getty Images
15 of 21 Jason Merritt/Getty Images
16 of 21 Jason Merritt/Getty Images
Paris Hilton and Nicky Hilton
17 of 21 Kevin Mazur/WireImage.com
18 of 21 Kevin Mazur/WireImage.com
19 of 21 Jason Merritt/Getty Images
20 of 21 Jeff Kravitz/FilmMagic.com
21 of 21 Jeff Kravitz/FilmMagic.com