LOS ANGELES - Lionel Richie is welcoming full diva behaviour from Mariah Carey when she joins his "All the Hits " tour next month.

Richie jokes that he expects Carey to bring along a massive entourage and might need a "dressing room larger than the arena," but that's no problem.

"I wanted her to feel in her element," Richie says. "And a diva has to do what a diva has to do."

The Grammy- and Oscar-winning singer-songwriter says he invited Carey on tour because of her discography of hits and campy vibe.

"It's going to be camp city," Richie says. "And I told her, 'Bring all the camp with you."'

The 68-year-old father of three -- who says he's writing a book called 'How to Survive Your Children' -- is accustomed to dramatics. He says his daughter Nicole started her acting career as a teenager at home anytime she denied wrongdoing. Now she's earning praise for her comedic turn in the NBC sitcom "Great News."