By Amber Goodhand - Breaking Celebrity News Reporter

The mystery surrounding the real identity of Khloe Kardashian's biological father can be solved with a simple DNA test, and Breaking Celebrity News has learned there's a $250,000 offer on the table.

Sirius XM Satellite personality Gregg 'Opie' Hughes of The Opie & Anthony Show announced on Tuesday morning that he would ante up a quarter of a million dollars if Khloe, 27, would take a DNA test to prove that the late Robert Kardashian is her father.

If Khloe accepts, the $250,000 will be donated to a charity of her choice.

As Star magazine revealed in a blockbuster exclusive, two of Robert's previous wives — both after his marriage to Kris Jenner ended — have come forward claiming the late attorney told them Khloe is not his biological daughter and she is in fact the result of an affair on Kris' behalf.

"Robert did question the fact that Khloe was his. Any normal man would if they knew their wife had cheated on him," Robert's widow, Ellen Kardashian, told Star.