Diddy, Jack Black and Ben Stiller dye their pubic hair, it has been claimed. The trio all reportedly use Betty Beauty dye to transform the color of their nether regions.

Rapper Diddy was so impressed with the product he asked his assistant to send back a thank you note when he was sent a complementary sample of it.

Diddy says he was "not black enough" to star in "Tropic Thunder."

The rapper admits he auditioned for the role of an African-American actor - famously played by Caucasian star Robert Downey Jr., who used make-up to change the color of his skin for the role - in Ben Stiller's movie, but was turned down.

Courteney Cox, Jennifer Aniston, Ben Stiller, Jack Black and Kate Beckinsale attended Sacha Baron Cohen and Isla Fisher's daughter Olive's first birthday party Sunday.

The celebrity couple were joined by their A-list friends to celebrate Olive's landmark birthday with a barbeque at their house in Los Angeles.