Mischa Barton Gets Her Joint On
Mischa Barton rolls some wonky joints for a pothead! Via TMZ... Mischa Barton: Chronic Smoker

Hollywood Loves Weed
Celebrities Smoking Joints

More on Mischa getting huffy at Cannes below...

Mischa Barton's Joint Effort
Mischa Barton is Enjoying Cannes
Mischa Smokes Up On Roberto Cavalli’s Yacht

Photos via TMZ/Ramey