Celebrities who smoked marijuana. Some might come as a shock -- others not so much.

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2. Frances McDormand
Frances McDormand was the cover girl for High Times, a magazine for marijuana enthusiasts, in 2003. REUTERS
5. Willie Nelson
Willie Nelson has long been an activist for the legalization of marijuana. Reuters
6. Nicole Richie
Nicole Richie admitted to driving under the influence of marijuana in a 2007 arrest, according to Jezebel. REUTERS
1. Lady Gaga
Lady Gaga "'smokes a lot of pot' and drinks straight whiskey to come up with her music creations," according to an SF Gate report. Reuters
4. Paris Hilton
Paris Hilton was detained for possession of marijuana during her stay on the French island of Corsica, according to TMZ. REUTERS