Oksana Grigorieva is reportedly demanding $40 000 a month from Mel Gibson in child support.
The Russian singer - who has accused her ex-lover of domestic abuse - is said to have asked a judge to increase the monthly payment from $5,000 to $40,000 to help look after their 10-month-old Lucia.
As well as paying for Lucia, Mel also pays for the luxury Los Angeles home where Oksana lives with her daughter and her 13-year-old son Alexander and sources close to the actor are furious she is demanding more.
One told gossip website TMZ: "Lifestyle is not an issue for a baby. Think she knows the difference between a Ford and a Bentley?"
It is also reported Oksana receives $2,500-a-month in child support from Alexander's father, former James Bond actor Timothy Dalton.
It is thought Judge Scott Gordon is yet to rule on Oksana's petition.
Last month, it was claimed Mel wanted to pay just $6 000 a month in child support.
