a share of the $9 million Miami home she shares with boyfriend Enrique Iglesias.
Alla and Sergie Kournikova claim they are joint owners of the 22-year-old's waterfront mansion and have filed a lawsuit demanding a two-thirds share of it, The World Entertainment News Network reported Thursday.
A statement from the Kournikovas' lawyer Howard Rudolph said: "She is taking the position this is her house. Mom and Dad were her managers and promoters. This was a house they all shared."
Anna Kournikova is expected to fight the case, the WENN said.
A source close to the athlete, who is on tour with Iglesias, said: "Anna and her parents fell out when they stopped working together. It's very sad, but they are all very stubborn."
Celebrity Families of 2014 [PHOTOS]