Buffy the Vampire Slayer and sister Dawn are back in action ... patrolling the streets of Beverly Hills for a good sale.
Former "BtVS" co-stars Michelle Trachtenberg and Sarah Michelle Gellar were all smiles yesterday when they were spotted getting their shop on in L.A.
The duo hit up Eggy, a children's clothing store -- where they probably picked up something for SMG's daughter with Freddie Prinze, Jr., Charlotte, who was born last September.
