Bridget Christina Marquardt (née Sandmeier; born September 25, 1973) is an American television personality, model, paranormal investigator and actress, known for her role on the reality television series The Girls Next Door, which depicted her life as one of Playboy magazine publisher Hugh Hefner's girlfriends. Although not a Playboy Playmate, she has appeared in nude pictorials with her Girls Next Door co-stars and fellow Hefner girlfriends Holly Madison and Kendra Wilkinson.
Bridget Marquardt, born Bridget Christina Sandmeier, was born in Tillamook, Oregon. Shortly after her birth, Marquardt's mother moved the family back to California, where Marquardt was raised. Her parents divorced when Marquardt was in the fifth grade. Her mother remarried, and Marquardt and her younger brother Edward moved to their stepfather's ranch, where they later gained a half-sister, Anastasia. Marquardt attended Galt High School for her freshman and sophomore years and then transferred to Lodi High School, from which she graduated in 1990.