Olivia Wilde, Hailey Bieber, and Julia Roberts were among the celebrities who attended the second annual Academy Museum Gala in Los Angeles. Olivia went bra-less in a see-through gown, showcasing her petite frame. Hailey wore a flesh-flashing walnut brown dress, while Julia sported a monochrome gown reminiscent of a men's suit. Other stars in attendance included George and Amal Clooney, Selena Gomez, and Emma Stone. Singer Diana Ross performed at the event, and honorees included Tilda Swinton and Steve McQueen. The gala raised $11 million for the museum.