Joan Rivers Celeb Apprentice tirade

Joan Rivers defended her daughter on The
Celebrity Apprentice

The comedienne appears with her daughter on the NBC show, but when Melissa was fired by Donald Trump, she launched into mama-bear mode.

She called rivals poker champ Annie Duke and Playboy pinup Brande Roderick "pit vipers".

She also called Brande a "stupid blonde" and Annie a "white trash" poker player.

Neither NBC nor Donald Trump were available for comment.