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The singer has been told to lay off her body art by her dancer friend.
'(Derek) doesn't like Cheryl's tattoos much and has been poking fun at them,' a source told The Sun.
'He said to her that even though he loves her, he doesn't love her inscriptions. He got a laugh out of her by saying when she's older her back will look like a treasure map.'
Cole showed off her latest tattoo at the National Television Awards last week.