Bronzing with a bottle may be safer than grilling yourself to a crisp, but it can be even more dangerous for your image. Just look at what happened to Christina Aguilera on Monday, when her rendition of "At Last" at Etta James' funeral was upstaged by the spray tan dripping down her leg. And Kim Kardashian had to feel burned when she stepped out to dinner in Miami with a tell-tale white spot on her hand. At least beach bums don't have to worry about missing a spot.
And though being orange in public is nothing new for the "Jersey Shore" gang, a little part of us died when we saw George Clooney strike an off-color pose on the red carpet. Let's hope it's just a mild case of overexposure to that warm Lake Como sun.
In honor of these and other melanin mishaps, HuffPost Celebrity compiled this slide show of Hollywood's most unnatural tans. Real or fake, they've left a lasting impression.