Holly Madison reveals her daughter's name: It's, uh, colorful

Former Playboy model Holly Madison and her boyfriend, Pasquale Rotella, have decided on a name for their newborn daughter: Rainbow Aurora Rotella.

"I wanted to give my daughter a unique name," Madison tells E! News -- and mission accomplished there. "Growing up, there was a girl in my school named Rainbow and I was so envious of that name. I thought it was so pretty and unique."

Madison gave birth to her daughter on Tuesday (March 5). It's the first child for her and Rotella, who have been together for a couple years.

Rainbow Rotella joins a long list of celebrity offspring with unusual names, from Blue Ivy Carter to Kal-El Cage to Harper Seven Beckham. You can see more of them in this gallery.