We all know that JANICE DICKINSON is... or that she THINKS she is... the "world's first supermodel".  But she's 56.  Should she still wear a bikini?

Whether it was wise or not, she wore one in Malibu on Monday.

(Check out the pics...)

Her face should be declared a Federal Plastic Surgery Disaster, but her body is in pretty amazing shape.  There's not an ounce of fat on her.

But does she look GOOD?  Or should she invest in a bathing suit that covers her up a little more?

YOU make the call:  Janice Dickinson in a bikini... YES OR NO?