Lisa Rinna didn’t shy away from naming her former “Celebrity Apprentice” co-stars Dionne Warwick and Star Jones as the rudest celebrities she’s ever worked with.

In fact, the “Real Housewives of Beverly Hills” alum, 62, labeled Warwick as a “nasty piece of work” in her new memoir, “You Better Believe I’m Gonna Talk About It.”

“The first time I met her on a create-your-own pizza task, she barely looked at me but had the audacity to bark, ‘Go get me a Pepsi!’” Rinna recalled in the book.