March 08, 2013 11:30 AM

Rex USA

Holly Madison has some bunny new to love!

The former Girls Next Door star and her boyfriend Pasquale Rotella welcomed a daughter, Rainbow Aurora Rotella, on Tuesday, March 5 in Las Vegas, a source confirms to PEOPLE.

“I wanted to give my daughter a unique name,” she explains to E! News, who first reported the baby’s name. “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!”

The baby girl arrived at 11:59 a.m., weighing in at 7 lbs., 2 oz.

In August, Madison announced the pair were set to be parents, before Rotella revealed they were thinking pink.

And in between heating up the red carpet in a series of sizzling dresses, the mom-to-be has been busy perfecting her princess’s Alice In Wonderland themed nursery

If left up to Madison, baby girl’s birth will be the first of many.

“I want six kids,” she said in December. “We’ll see how it goes, but I want a big family.”

— Anya Leon with reporting by Mark Gray

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