Janice Dickinson sunglasses make up plastic surgery Joan's on third

Janice Dickinson sunglasses make up plastic surgery Joan's on third

Even supermodels have to do the knife check!

Janice Dickinson hit up celeb hotspot Joan's On Third for lunch Monday, where she mugged for the camera ... but checked her teeth first!

After she gave her smile the all-clear, Dickinson happily gave good face for our photogs. Check out all the pics in our gallery below! They'll make you smile, just like Janice ...