Cher Sued -- Choreographer Claims Black Dancer Quota

Cher is being sued for allegedly telling her choreographer there were too many black people on stage during her concerts ... but the singer says the allegations are BS.

According to a new lawsuit -- obtained by TMZ -- Cher was auditioning dancers for her "Dressed to Kill" tour in 2014 when choreographer Kevin Wilson said he particularly liked "a minority female dancer." Wilson claims Cher responded, "We have too much color onstage."

Wilson claims in the suit -- filed by attorney Perry Wander -- Cher then told him to find a white, blonde dancer. Wilson further claims he was instructed "not to cast anymore dark skinned black dancers on the tour."

And there's this ... according to the lawsuit, after a show this past June in Louisville, a male dancer invited a female fan to his hotel room and allegedly got sexually aggressive. The suit claims Cher tried to cover it up ... keeping the male dancer in the show and firing the 3 whistle-blowers, including Wilson.

The 3 claim they were told the reason for the firing was budget cuts, which they pooh pooh because the tour was a huge success, grossing a reported $54.9 million and her Bob Mackie costumes cost $100,000 a pop.

Wilson -- who is black -- is claiming racial discrimination and retaliation.

Cher's rep tells TMZ, "These are ridiculous allegations. They couldn't be further from the truth." Cher's lawyer zeroed in on the alleged racial statement, calling it "untrue and categorically denied," adding, "To attribute such a statement to Cher is absurd."