Beautiful singer Rihanna thinks lunatic Britney Spears and cokehead Lindsay Lohan are not doing enough to overcome their addictions and emotional problems.

Rihanna supports Brit and Lohan and wish they get their lives back but admits advices are useless if they don’t want to change their minds.

She tells British magazine Cosmopolitan, “There’s nothing I can say that’ll change their minds about their lifestyles. They have to make the change for themselves and I don’t know if they want it bad enough.”

Lindsay maybe will be recovered-I think she’s mad but smart- About Britney… well, she clearly doesn’t want to change her life. She lost her sons custody, visitation rights… and she still shows her crotch, hits her car, goes for tanning and eats fast food… She needs a new brain to become sane.

And more about Rihanna: Josh Hartnett denies dating with the Umbrella singer. They were seen kissing and cuddling at NYC club Pink Elephant last week but Hartnett denies romance and claims “She’s fun, she’s a nice girl. We just met on TRL [last week]. I don’t know her”… He doesn’t know her? WTF? He smooched her.