As Kanye West
reportedly tweets and deletes a picture of the back of a mystery naked woman
and Chris Brown shares a photo of his bloody chin after allegedly being attacked with a bottle
, we take a look at some other inappropriate celebrity Twitter pictures - from Rihanna with a suspicious looking substance to Lady GaGa topless...
Rihanna shares a picture of herself rolling up a suspicious looking substance while at Coachella Music Festival.
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