Modern evening can mean anything from restrained winter white to a sleek le smoking tailored just so. Not to mention the models who would look fabulous in a potato sack and even better in a slinky Mugler or a Pucci mini. WHO: Dakota Johnson WHAT: Saint Laurent dress, Roger Vivier bag WHERE: Fifty Shades of Grey London premiere WHEN: February 12, 2015 WHO: Nicole Kidman WHAT: Valentino Sala Bianca WHERE: Queen of the Desert premiere, Berlin WHEN: February 6, 2015 WHO: Natalie Portman WHAT: Christian Dior WHERE: As We Were Dreaming premiere, Berlin WHEN: February 9, 2015 WHO: Charlotte Gainsbourg WHAT: Louis Vuitton WHERE: Every Thing Will Be Fine premiere, Berlin WHEN: February 10, 2015 WHO: Sofía Sanchez de Betak WHAT: Rodarte dress, Yazbukey bag, Nicholas Kirkwood shoes WHERE: The 2015 amfAR New York gala WHEN: February 11, 2015 WHO: January Jones WHAT: Sandro WHERE: 67th Annual Directors Guild of America Awards WHEN: February 7, 2015 WHO: Lily Aldridge WHAT: Calvin Klein Collection WHERE: At the Sports Illustrated 2015 Swimsuit Takes Over Nashville event WHEN: February 11, 2015 WHO: Karlie Kloss WHAT: Mugler WHERE: The 2015 amfAR New York gala WHEN: February 11, 2015 WHO: Catherine McNeil WHAT: Emilio Pucci WHERE: The 2015 amfAR New York gala WHEN: February 11, 2015 WHO: Soo Joo Park WHAT: Balmain WHERE: The 2015 amfAR New York gala WHEN: February 11, 2015