When your job is to smile for the cameras all day, a good set of teeth is a must, which is why a whole bunch of celebrities including Cheryl Cole, Tulisa, Katie Price and Chantelle Houghton have all opened wide and said 'aaaahhhh' to get the perfect pearly whites.
Well, it is called a Hollywood smile for a reason.
Check out these stars who have had their teeth done in our before and after gallery.
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