Actress KATE HUDSON forced herself to smile through the pain of an impacted wisdom tooth after suffering a dental nightmare during a recent modeling shoot.

The Almost Famous beauty replaced Demi Moore as the face of fashion brand Ann Taylor earlier this year (12) and she posed for fashion photographer Norman Jean Roy for the new winter advertising campaign in New York.

However, in a behind-the-scenes video released online, Hudson reveals that while she looked radiant in the pictures, she was secretly fighting a throbbing pain in her jaw.

She says, "I had my first horrible wisdom teeth experience where I was just pulsating at the mouth with an impacted wisdom tooth. (But) I still had a great time with everybody."