Sarah Michelle Gellar proved that she's a big fan of her husband by wearing a pair of pajamas with his face all over them.Gellar has been married to her I Know What You Did Last Summer costar, Freddie Prinze Jr., since 2002.The Buffy the Vampire Slayer star joked that everyone should have a pair of daytime pajamas.Sarah Michelle Gellar is just out here putting all of our relationships to shame.