Ronda Rousey: Painted Naked Ass Creates Swimsuit Boom

Ronda Rousey's swimsuit was painted on for her Sports Illustrated photo shoot, but that didn't stop sales of the actual one-piece it's based on from selling out almost instantly.

Ronda's paint job was a replica of a one-piece made by Australian swimwear brand, We Are Handsome. The company's a fave with celebs ... Beyonce even sported one of their jaguar suits over the summer.

We Are Handsome tells us Ronda's plug made website sales for the suit surge 300% ... so good luck getting it.

But in case you're feeling lucky, it's called The Fighter ... perfect fit for Ronda, even if she never really wore it.