Camilla Belle in Marc Jacobs at the launch of Marc Jacobs Divine Decadence in Los Angeles, California, July 2016.

Getty Images for Marc Jacobs

Who: Camilla Belle.

When: Thursday, July 21.

Where: A party celebrating the relaunch of Marc Jacobs Divine Decadence in Los Angeles, California.

What: A Marc Jacobs Resort 2017 minidress, sandals, and clutch.

Why: In a room filled with bright young things wearing Marc Jacobs's eccentric, '80s-inflected Resort collection, Camilla Belle still stands out in this lace-and-neon embellished mini. (It helps that the dress itself is an electric kind of fluorescent — but, surprisingly, no one opted for one of those sparkly MTV sweatshirts.) While everyone else was here thinking the '90s were back, for Camilla Belle, it's all about the '80s.

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