Leighton Meester has sued her mother Constance for spending money on herself – money that the actress had been sending for the care of her brother Lex, who has medical issues.
Constance Meester used the $7,500 a month for cosmetic procedures, among other personal expenses, the suit alleges.
“This whole thing’s been really tough on Leighton,” a source tells PEOPLE. “Her only concern has always been taking care of her brother. Leighton’s really close with her brother and her dad – her parents are divorced. Leighton’s a sweet girl – she cares about work, friends and family.”
The Gossip Girl actress, 25, claims her mother threatened to sue her for $3 million if she didn’t raise the monthly allowance to $10,000.
Another woman also won a restraining order against Constance earlier this year after alleged harassment.
The most recent lawsuit was first reported by TMZ.com.
BY TIM NUDD