The Met Gala red carpet had plenty of surprises, from Rihanna's pregnancy to a standout moment from Diana Ross. See all the highlights from the night.

P erennial Met Gala star Rihanna stole the show ahead of her red carpet arrival at the Metropolitan Museum of Art's annual Costume Institute Benefit on Monday night by revealing she is pregnant with her third child with partner A$AP Rocky.

Fashionably late, the pop star seemed to confirm rumors she was pregnant when she met shouts of congratulations with: “Thank you!”