WWW- The bank robber was a knockout – until she opened her mouth to speak.

That’s when her voice, which a cop described as “deep and masculine,” revealed that the curvy criminal was in fact a man, reports the New York Daily News.

Heads turned when the bodacious bandit, wearing a tight orange T-shirt, green slacks, sunglasses and a wig, strolled into a Citibank branch in North Babylon, N.Y., at lunchtime Friday.

“The guy looked just like a woman, with obviously well-endowed breasts,” said Suffolk County Detective Sgt. Bob Doyle.

But when the transvestite thief thrust a single white-gloved hand clutching a beach bag at a teller and announced she had a gun, her commands came out sounding more like Vin Diesel than Britney Spears.

The teller tossed an unspecified amount of money in the bag, and the stunning stick-up artist strutted out.