Keira Knightley and Steve Carell's new movie, Seeking a Friend For the End of the World, opens this Friday, June 22, and while Keira's onscreen wardrobe isn't extensive, one of the outfits she wears throughout the flick is perfect for Summer. Here is Penny, Keira's character, sporting a lavender button-down, a knee-length dress with an army green anorak, black Converse sneakers, and a delicate gold starfish necklace. It's a simple look but one with a color combination that makes it fresh. We're smitten with the mix of lavender and army green and the fact that she looks cute yet relaxed in her sneakers. Before you catch the movie this weekend, get Keira's onscreen look by shopping similar pieces below.