1 of 39OK, Diana Vickers has just finished performing at the O2 arena in Dublin here, but really, has she never heard of make-up remover?
The X Factor "I'm so natural I sing barefoot" babe heads out with her full quantity of performance slap in place, making us quake in our boots as she does so.
So not a good look. Click on to see more dos and don'ts of celebrity make-up...
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