Celebrity oops! Embarrassing pictures of the stars

Mad Men star Jon Hamm found himself in an awkward make-up malfunction moment when he stepped out at the The Paley Centre for Media's Annual Los Angeles Benefit.

The green-eyed actor was seemingly oblivious to his facial error - it looks like he's got some talc on his nose...we have to assume it's concealer.

Check out our round-up of other stars who have had an 'oops' moment caught on camera...

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