Rebecca Ferguson, Kiernan Shipka & More of This Week's Best Dressed.

Temperatures might be hovering just under 100 degrees in New York City right now, but celebrities are sticking with a mid-winter palette of black, white, and navy. Mission Impossible: Rogue Nation star Rebecca Ferguson wore a simple and sophisticated blue jumpsuit by Diane von Furstenberg to the film’s premiere. On the sweeter side, Kiernan Shipka chose a girly printed cocktail dress from Valentino for the Los Angeles premiere of The Gift. And Nicole Richie brought the sexy in a plunging silver gown by Bec & Bridge with strappy black sandals for an appearance on Jimmy Kimmel Live.

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Cara Delevingne, Katie Holmes, & Charlize Theron Sparkle As This Week’s Best Dressed