This week was all about young, buzzy, risk-taking style stars. Alexa Chung, who never ceases to cause a stir, stunned in a Valentino butterfly-adorned cape situation, while Lupita Nyong'o looked perfect yet again in a patterned Peter Pilotto number. London Fashion Week brought out Ashley Madekwe and Daisy Lowe looking their most chic, while Kate Mara, whom we will forever feel bad for (that's not a spoiler, right?) held it down stateside in a chic Michael Kors coat.
Click through for all that and the rest of the week's best dressed.