She may not be as well-known as Kate Middleton, but when Queen Letizia of Spain took to the stage at the 2015 "Woman Awards" in Madrid, she definitely caught people's attention!

queen letizia

Wearing a strapless dress and sporting a new bob, the royal's shockingly bony back was on display. But she's not the only famous face who's caused a frenzy over her body type!

Can you match these six celebs to their bare backs?!