How old is Miley Cyrus's friend Mandy Jiroux?

a href="http://www.youtube.com/watch?v=Rb_HXgPlgEs" rel="nofollow"http://www.youtube.com/watch?v=Rb_HXgPlg…/a >>That video was uploaded on 23 March 2008, and she said she was 20 so she's about 21. Her and Miley are four and a half years apart. Mandy's birthday is on December the 15th and Miley is 17 in November so she'll be 22 in December.