How incredible did Ashlee Simpson look yesterday on her way to the premiere of Boardwalk Empire’s second season? Her boyfriend, Vincent Piazza, stars on the HBO period drama, and her dress fits the show’s Prohibition-era wardrobe perfectly.

This was Ashlee and Vincent’s official public red carpet debut as a couple, after dating for about three months. They look so cute and well-matched together.

Check out the red carpet photos from Boardwalk Empire’s premiere in the gallery below!