Amanda Seyfried and Justin Long Are a Picture-Perfect Couple at the Met Gala

Amanda Seyfried and Justin Long stepped out for a rare public appearance at the Costume Institute Gala at the Metropolitan Museum of Art in NYC on Monday night. Amanda, who wore a white Givenchy gown, was all smiles while posing for photos with Justin on the red carpet. The extravagant event is a far cry from the couple's normal routine. Amanda and Justin, who started dating nearly two years ago, are normally seen being goofy with each other during casual outings. Keep reading to see more photos of their adorable night out, then check out all the celebrity arrivals at the Met Gala.