Only Kristen Stewart (photos) could go from wearing Valentino to shoving a green cap on her head and a flannel in her back pocket and look equally adorable in both outfits. The actress showed up at the Welcome to the Rileys screening in NYC last night in red lips and towering Brian Atwood heels, and she stunned up close. Yes, we Tyra-ed out and told her she looked “fierce” at the end of our interview, because, well, LOOK AT HER. Guys, she is the hottest. But our favorite part about Kristen Stewart is that she has no qualms getting the hell out of her uncomfortable press-friendly outfits th...