The 22-year-old actress revealed a little sideboob and showed off her lean legs in the ensemble, which she paired with white pumps and an oversized ring on her left hand.
Earlier this week Watson had a slightly embarrassing wardrobe malfunction while promoting the film in Hollywood. Her dress slipped down and one of her "nipple daisies" was revealed. At least she had the sense to use the nipple-covering accessory!
One thing is for sure - the former "Harry Potter" star is all grown up.
See more photos of Emma at the premiere...