GABRIELLE UNION is lining up for a legal battle with a website that printed an unfounded slur on her.

  The singer was stunned when Bossip.com printed and then refused to retract a letter allegedly written by a professional athletes wife, accusing her of cheating with her husband.

  Now she has brought her lawyers into the battle and she’s prepared to spend every penny she has clearing her name.

  Union tells Sister to Sister magazine, “(He) wrote this long-old hater manifesto, and one of the blogs published it and now I have to take legal action.
“I may go broke trying to prove what’s right is right and what’s wrong is wrong. If I got to go broke to make that stand I’ll do that.” (IG/STS/KD)