Joanna Krupa to Website: I'm Not a Hooker!

Oh, the irony.

Just a couple days ago, Joanna Krupa complained that she isn't getting enough sex from her fiance.

Now, The Real Housewives of Miami star stands accused of selling her body for sex!

According to TMZ, Krupa's attorney has sent a letter to Nik Richie of TheDirty.com in response to that site's accusatory article, the headline for which reads: Joanna Krupa Is a Confirmed Hooker.

Said confirmation is the word of an anonymous man who claims to have paid $10,000 through an escort agency to get it on with the gorgeous model.

In the letter, Krupa refers to the allegation as an "an extremely serious matter" and is threatening to file a lawsuit against Richie doesn't remove the article.

We hear he isn't planning to do so, however.