"They told me they'd done market research and women over 40 didn't wear makeup, " she fumes.

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In contrast to the DIs, the recruits weren't allowed to wear makeup.

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London, England (CNN) -- "Never wear your makeup to bed, " implore the beauty editors.

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"It's the makeup people wear today ... the shoes we wear, the language we speak, " he explains.

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Or, if you want to get funky, you could always wear bizzaro hats and makeup that prevent face-detection technology from working.

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Visitors are encouraged to wear their best fantasy costumes, accented with extreme makeup and, of course, body paint.

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Pictures of Cindy Crawford, Rihanna and Katy Perry without makeup have recently circulated widely in the gossip press, with writers concluding: it really is OK to wear nothing on your face.

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