Sandy Bentley (born May 18, 1978 in Joliet, Illinois) is notable both individually and with her sister Amanda (Mandy) Bentley as the Bentley Twins. The 5 foot 9 inch tall twins were featured on the May 2000 cover of Playboy Magazine and were well known as Hugh Hefner's live-in lovers at the Playboy Mansion, during 1999 and 2000.
Subsequent to her relationship with Hefner, Sandy became involved with financier Mark Yagalla, who lavished her with expensive gifts worth over $6 million, including jewels, furs, automobiles, and an expensive home in Las Vegas.