RihannaRihannaShe seems pretty clean-living.

So why would Rihanna be chatting about rehab?

The Umbrella star has been mouthing off about the pressures of fame, but insists she'd never seek help for it.

Yup, in the words of Amy Winehouse, when it comes to rehab Rihanna says no, no, no.

But why?

Seems the 19-year-old lass is just too tough for that kind of kerbabble.

Rihanna told The Sun:

"I refuse to crack under pressure - in fact, I thrive on it.

"So when I read about Britney (Spears) and Amy Winehouse who have suffered under it, it's sad.

"It is easy to criticise them but it happens. You just have to stay focused and keep your feet on the ground."

Josh HartnettJosh HartnettAnd who better to keep Rihanna grounded than her lovely new man, Josh Hartnett?