The 29-year-old actress looked stunning in a Givenchy gown on the red carpet alongside her beau.
“She has really great taste, she’s very cool and we work together on everything,” Amanda‘s stylist told E! News about her style choices. “She likes diamonds but she always likes a pop of color.”
This year’s Costume Institute Gala Benefit – celebrating the opening of the China: Through the Looking Glass exhibition – is co-chaired by Jennifer Lawrence, Chinese actress Gong Li, Vogue editor Anna Wintour, and others.