Flashback! 10 Memorable MTV Movie Award LooksFor every star who hits the red carpet in a hot ensemble – hello, Emma Stone! – there's one who turns heads for the all the wrong reasons. Here, the most noteworthy fashion and beauty moments in years past

2009: SIENNA'S BACK STORY

Sienna Miller is undeniably gorgeous, but she looked even better going than coming in this green, Swarovski-encrusted, open-back mini from her Twenty8Twelve line. The structured shoulders and strappy silver sandals were equally cool.