How old is Miley Cyrus?

Holy Miley Cyrus... when did you turn 40? Girl, you know I adore you and have been a HUGE supporter of you crossing over into adulthood... even going slutty. I'm fine with you growing up. I'll defend you to no end. But tonight at the Billboard Music Awards..... you look old. Like cougar old. I mean a really good looking cougar but... you're not 40. not even close. It's mostly the hair.. and the shoulder pads... and the.... shit girl are you even wearing clothes. It looks like you just rolled out of bed with Liam, threw on your white blazer a bit of jewelry, a pair of Louboutin's (granted a great pair) and forgot everything else. Did you look in the mirror?