Paris Hilton is reportedly set to lose her £25 million (U.S. $50 million) inheritance following her wild behaviour.The reality TV star - who recently completed a prison sentence for driving with a suspended licence - has angered her grandfather, Barron Hilton, chairman of the Hilton Hotel chain. He is said to be embarrassed about Paris' outrageous behaviour and has cut her out of his will. Sources claim Barron has never really forgiven his outrageous granddaughter for cashing in on the infamous sex tape she made with ex-lover Rick Salomon. Instead of fighting Salomon to stop the footage coming out, she allegedly made a deal with him which meant she could keep a cut of the profits from the subsequent DVD release. A source said: "When Paris agreed to leave the tape on sale for a share of the cut, it seemed like she had given it her blessing. Her grandfather couldn't understand that and it just went downhill from there."The 79-year-old mogul has become more and more disillusioned with Paris -who was recently accused of smoking marijuana in a nightclub - and refuses to be talked round by family members. Jerry Oppenheimer, author of the Hilton family's biography 'House of Hilton', said: "He was, and is, extremely embarrassed by how the Hilton name has been sullied by Paris. He doesn't want to leave unearned wealth to his family."However, some reports claim Paris is still set to receive her inheritance.