Keira Knightley has, on occasion, made some questionable red carpet fashion statements. It goes without saying that her incredibly thin build allows her to wear many styles with ease, but every once in a while she seems to get wrapped up in the whole, "I'm so tiny, I can wear anything" mindset and ends up wearing things that look like they've been thrown away, shredded, thrown away again, and then made into a dress.

The London premiere of Edge of Love was not one of those instances. She looked absolutely amazing in a jewel-toned purple Erdem dress, and we find no reason you can't get a look like this for yourself. Here's how: