Playboy Playmate confirms claim late Hugh Hefner tried to 'force' her to have sex with her twin sister

Karissa Shannon Details Hugh Hefner's Alleged Sex Demands With Twin Sister

Pregnant Playboy alum Karissa Shannon vows to raise son to be ‘opposite’ of Hugh Hefner, details surprise engagement to mystery man

Karissa Shannon: Hugh Hefner Tried to ‘Force Me and My Sister to Have Sex With Each Other’