how old are the celebrities ?

you have to guess how old are the celebrities

1 How old is Beyonce Knowles ?
2 How old is Miley Cyrus ?
3 How old is Taylor Swift ?
4 How old is Selena Gomez ?
5 How old is Demi Lovato ?
6 How old is Raven Symoné ?
7 How old is Ashley Tisdale ?
8 How old is Vanessa Hudgens ?