Related Information for Slumber Party Girls Slumber Party Girls (or SPG for short) is an American girl group.These five singers recorded their debut CD which was released on October 3, 2006. During the 2006-2007 television season, SPG hosted the KOL Secret Slumber Party every weekend on CBS, as well as also featured on the show, Dance Revolution, where they served as the show's house band; the program was hosted by Radio KOL's DJ Rick.The Slumber Party Girls were chosen from more than 1,000 who auditioned.Their new.. read more