Janice Dickinson never misses an opportunity to strike a pose for the cameras. While filling up her SUV in Brentwood, the self-proclaimed world's first supermodel was happy to flash her rail-thin frame while holding the pump.

The 56-year-old brunette, wearing a skimpy lilac dress and heels, has been extremely vocal over the years about her plastic surgery procedures. Looks like Janice has been able to maintain her skinny bod ... even if a doctor or two has helped her out!

Ms. Dickinson recently had an incident involving her false teeth. She tells Page Six:

    "I was so excited talking to [my friend] that I put my teeth in my napkin, and then I couldn't find them! Did they fall into the soup? These things are so expensive they could feed a small village."

How embarrassing! See more of Janice at the pump ... after the jump.