Kristina and Karissa Shannon

Despite their "girlfriend" status, Karissa said the relationship she and Kristina shared with Hefner was more for fun and the opportunity to be on the show, rather than romance. The first episode they appeared in attracted 2.4 million viewers, making it the most-watched season premiere in the show's history; five weeks after the premiere, ratings had dropped to 919,000.

The Shannons appeared as Miss July and Miss August 2009 in the combined "summer issue" of Playboy, a combined issue necessitated by financial problems at the publisher. The two shared a single centerfold, becoming the only twins to be designated Playmate of the Month for two distinct months. By January 2010, the Shannon twins moved out of the mansion, though they continued to appear in The Girls Next Door.

The twins had small roles in Somewhere, a film directed by Sofia Coppola which won top honors at the 67th Venice International Film Festival in 2010. Read Less