Jennifer Aniston has revealed her one big turn-off when it comes to potential romantic partners - a hairy back.

The actress - who is still keeping fans guessing over her romance with singer John Mayer - insists that if a man is sporting a serious back rug then he has to go.

She tells Access Hollywood, "I got to say, that’s a deal breaker.

"The occasional rogue hair, I can easily help that one out."

So what is it that Jennifer finds attractive?

She adds, "Oh God, can you have a funny guy you are not attracted to? Basically, it's chemistry, chemistry, chemistry."

Maybe Jen shouldn't watch her on-off beau's recent attempt at humour, in which he mocks her ex-husband Brad Pitt.

See Jen's men below