American actress Leighton Meester, best known for her role as Blair Waldorf in US TV show Gossip Girl, has today won a law suit against her mother, confirming that Constance Meester spent thousands of dollars on hair extensions, plastic surgery, and Botox injections, when the money should have been used to pay for medical treatment for the star’s younger brother Alexander, who has multiple health problems.

26-year-old Leighton sent $7,500 to the family home every month to help with her brother’s medical expenses, but her mother decided this would be better spent on anti-aging injections and other cosmetic enhancements – she even argued that her daughter had agreed to pay give her $10,000 a month to keep herself looking youthful. The judge was not impressed by Constance Meester’s defence, and according to gossip website TMZ, believed that there had been no such agreement between the two.

Constance, who gave birth to her daughter while on remand for drug smuggling charges, initially counter-sued claiming that her support of Leighton’s acting career had been at the expense of her own happiness; she demanded $3 million in damages but later told her lawyers to drop the case. For her part, Leighton has said she will not be seeking compensation, maintaining that she just wants her mother out of her life for good. A source told RadarOnline last year that Leighton was ‘disgusted by her mother’ and wanted her brother to come and live with her in New York.