“Gossip Girl” star Leighton Meester is suing her ex-convict mother for using the money Leighton sent to cover her brother’s medical bills for her own plastic surgery. TMZ says:

According to the suit, Leighton’s mom refused to work, but Leighton felt badly for her younger brother Lex, who has severe medical issues. So Leighton sent her mom $7,500 a month so she could provide for Lex.

But the suit claims the mother, Constance Meester, used the money for cosmetic procedures and other personal expenses.

According to the suit, Constance even tried to convince Leighton they had an oral contract requiring Leighton to pay her $10,000 a month for life. Leighton says it’s a total lie.

Leighton wants the judge to declare there’s no contract between her and her mom.

Constance has since filed a $3 million dollar lawsuit against Leighton for violating that imaginary oral contact that entitled her to ten grand a month. And also for being assaulted with a water bottle. It’s like a high-stakes version of Jerry Springer in here. The NY Daily News says:

Constance Meester has filed a $3 million suit complaining her famous daughter reneged on an oral agreement to pay her $10,000 a month, canceled her health insurance and assaulted her during a 2 a.m. confrontation Dec. 11.

“[Leighton] pushed her mother to the floor and just started hitting her over the head with a water bottle,” Constance Meester’s lawyer [said].

[He also] denied allegations the mom spent the star’s $7,500 monthly checks on cosmetic procedures.

“That’s absurd,” he said. “She did have some cosmetic surgery, but not with the money from her daughter. She has some money saved up from when she managed her daughter.”

Did you catch that? She paid for her plastic surgery “not with money from her daughter, but with money saved up from when she managed her daughter.” Ah. I see. Maybe English isn’t her first language and nobody explained that no matter how many extra words you stuff between the preposition and the object of the preposition, it still means you paid for your new tits and fake hair with money you stole from your kid. Casey Anthony would make a better mother than this bitch does.

Leighton the set of Gossip Girl earlier this week:

PHOTO SOURCE: Fame Pictures