*Jermaine Dupri doesn't mince words when discussing the star factor of Justin Timberlake in his new autobiography "Young, Rich and Dangerous."

The veteran music producer is still sour about Timberlake's unwillingness to stand up for his girlfriend Janet Jackson following her Super Bowl "wardrobe malfunction" debacle - when it was Timberlake who removed the fabric to expose Jackson's breast in the first place.

Dupri writes: "I think Justin Timberlake is a talented performer. But he's very ordinary-looking. He could be any skinny white kid from the suburbs of Orlando. You could go to the mall and find another Justin. He doesn't make his style interesting even when he's onstage. To me, he just doesn't look like a star."