At the Salk Institute in San Diego, Emma Roberts, Ana de Armas, and others appeared on the red carpet.
While Chloe Grace Moretz preferred white slacks to reclaim her American Horror Story and Scream Queens co-star Billie Lourd.
In their complementary turtlenecks and tall boots, Iris and Maude Apatow were joined in the front row by her mother.
The Apatows were not the only celebrity kids on the show;Steve Jobs model daughter Eve rocked a small tube top, and Phoebe Dynevor (whose mother is Sally Dynevor) looked like the diamond of the season in a striped dress.
Before heading to the Louis Vuittons California exhibit, see the most famous celebrities.