From Gstaad to Marrakech, this week the fashion set embraced color in the form of whimsical floor-length gowns. On the other side of the world? A cool-girl uniform for last-minute holiday shopping. WHO: Sienna Miller WHAT: Balenciaga WHERE: American Sniper premiere, New York City WHEN: December 15, 2014 WHO: Mélanie Laurent WHERE: Marrakech International Film Festival, Morocco WHEN: December 13, 2014 WHO: Phoebe Collings-James WHERE: ASmallWorld 10th Anniversary Winter Weekend Gala Benefit, Gstaad WHEN: December 13, 2014 WHO: Tessa Thompson WHAT: Rodarte WHERE: Selma premiere, New York WHEN: December 14, 2014 WHO: Alma Jodorowsky WHERE: ASmallWorld 10th Anniversary Winter Weekend Gala Benefit, Gstaad WHEN: December 13, 2014 WHO: Suki Waterhouse WHAT: Stella McCartney dress, Zero Mara Cornejo coat WHERE: American Sniper premiere, New York City WHEN: December 15, 2014 WHO: Carey Mulligan WHAT: Alexander McQueen WHERE: ASmallWorld 10th Anniversary Winter Weekend Gala Benefit, Gstaad WHEN: December 13, 2014 WHO: Kyleigh Kühn WHERE: ASmallWorld 10th Anniversary Winter Weekend Gala Benefit, Gstaad WHEN: December 13, 2014 WHO: Kate Bosworth WHERE: On the street, Los Angeles WHEN: December 16, 2014 WHO: Kendall Jenner WHERE: On the street, Los Angeles WHEN: December 17, 2014