Tameka Foster to Appeal Custody Ruling

The legal battle between Usher and his ex-wife is far from over.

The singer won primary custody of the two children he shares with Tameka Foster last week, but sources tell TMZ the latter plans to file an appeal because she smells corruption, pointing to a fundraiser thrown in 2008 by Usher's attorney's law firm for the judge that presided over this case.

It raised $1,278.

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Foster simply doesn't understand how the judge could have ruled in Usher favor, considering how frequently he is on the road. She's already interviewing attorneys for her planned appeal in fact.

The custody battle has grown exceedingly ugly as time has gone on.

Most recently, Foster accused her ex of using her stepson's death - 11-year Kile Glover died this summer following a jetski accident - to delay proceedings in his favor. She has also alleged that Usher had an affair with his nanny and that he took drugs in front of his kids.

[Photos: WENN.com]