Karissa Shannon is the twin sister of Kristina Shannon. The twins were born in 1992 in Michigan. Both girls are glamour models and former Playboy Playmates. Karissa also became well known for being the girlfriend to Hugh Hefner. As a result of their relationship to Hefner, the girls appeared for a time on the E! reality TV series called The Girls Next Door. In 2009, the girls also appeared as Miss July and Miss August in the combined summer Playboy magazine summer edition. In early 2010, the girls moved out of the mansion, but continued to make some appearances on the show. Since that time, the girls began to choose their own paths, but Karissa remained in the spotlight if the adult entertainment business.