Cee-Lo Green says he likes watching Rihanna perform because she is "aggressive and sexually liberated."

The 'Forget You' singer toured with RiRi on her 'Loud' tour and was shocked by the specific crowd she brings in.

"I was touring with Rihanna, and I didn't realise that she has a very particular following. You know what I'm saying?" he told Esquire magazine.

"Let me be specific. Rihanna has a large lesbian community that comes out to see her shows. 'Cause she does a lot of girl-on-girl kind of stuff. It's very racy and sexually charged. And I like that. I like aggressive and sexually liberated women. It's hot to me."

It's not just the stage that RiRi exhibits a racy nature - she has recently been wearing a series of suggestive outfits and last night, wore a "stripperish" top while partying with ex-boyfriend Chris Brown.

Check out the pics of Rihanna performing on her 'Loud' tour to see what Cee-Lo was talking about.

Rihanna performs on 'Loud' tour...