She's come a loooong way since her days at the Playboy mansion!

On Monday Holly Madison and her daughter Rainbow Aurora took a stroll at the Grove, it looks like the one-month-old completely passed out midway though the afternoon!

And on the subject of the tiny tot's colorful and unique moniker, Holly got rather defensive last month after she and beau Pasquale Rotella went public with the name of their first child.

"There are a lot of smug haters out there who bag on my choice of a name, but I don’t care about what they think," Madison wrote on her blog. "I want my daughter to be proud of who she is and learn to speak up and stand up for herself at a young age. I spent most of my life being a people-pleaser who worried about what other people thought or thought was cool and I don’t want that for her ... There was a girl in my school a few years younger than me named Rainbow and I was so envious of her name because it was so pretty and unusual. She was a perfectly normal, well-adjusted, sporty girl, by the way, so I’m not worried about my daughter being 'traumatized' by having an unusual name."

And we thought Apple was a crazy name!

Holly Madison gave birth to a baby girl on Tuesday, and she was still undecided on a name until today, when she revealed the chosen moniker was Rainbow Aurora Rotella!

How on Earth did the Playboy model and her beau Pasquale Rotella come up with that?!

"I wanted to give my daughter a unique 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!" she told E! News.

Welcome to the world Rainbow!

Holly Madison and boyfriend Pasquale Rotella welcomed a daughter on Tuesday just before noon.

Madison confirmed the news to In Touch Weekly and added, "We haven't yet decided on a name for her but we couldn't be any more overjoyed than at this moment." The little one weighed in at 7 pounds, 2 ounces.

Rotella said, "I've never been more in love than I am today as, after months of waiting, I finally was able to hold my daughter for the first time. Holly and I are looking forward to spending some quiet time with our baby and enjoying our new family. I'm truly the luckiest man in the world."

On Sunday the former Playboy model told the Las Vegas Sun that she would be checking into the hospital on Monday, so this isn't a total surprise. "We have her name picked out, but that has to remain a secret for now," she told the paper. "It's such an unusual and difficult name I have a feeling we’ll add something simpler once she's arrived safely in our world."

Holly Madison and her baby belly looked radiant in red while attending the premiere of Parker in Las Vegas.

The former Girls Next Door star, who's expecting a little girl with boyfriend Pasquale Rotella in March, says she'll be walking down the aisle this summer.

Madison, 33, told People:

"One thing at a time. We totally want to [get married], probably in late summer. We're going to wait until the baby comes and we get moved in to the house before I start planning any of that."

The countdown is on, Holly!

Chad Finley

Holly Madison has to be the cutest pregnant woman ... EVER!

The former Girls Next Door star, who is due with her baby girl this March, hit up The Milk Shoppe in West Hollywood looking picture perfect in a sexy green dress and boots.

We love that she went straight for the red velvet cupcakes. Yum! Our favorite, too!

Can't wait to see her beautiful little baby!

Hugh Hefner's ex Holly Madison is expecting her first child, according to Us.

The former Girls Next Door starlet and boyfriend Pasquale Rotella are going to be first-time parents.

The Peepshow star tells the mag:

"I've always wanted to be a mom. But I thought it would take longer! I've been lucky! No morning sickness, but I do get a little nauseous. It happens before my show, so I keep ginger ale backstage."

Madison, 33, and party promoter, Rotella, 38, have been dating for nine months.

Perhaps friend Kendra Wilkinson will be give Holly some mommy advice!

From bunny to mummy!

Holly Madison is single, but she's not waiting for a man to start a family any longer! The Peep Show star has taken matters into her own hands and kick started the adoption process, In Touch reports.

"I've started the adoption process... I really want to be a mommy," the Playboy bunny revealed.

She's also started the nesting process! The blonde bombshell admits to the mag that she's already started decorating a nursery for her future little one. With the help of adoption mentoring service Hold My Hand, the 33-year-old hopes to bring home a child from either Africa or South Korea.

Hugh Hefner's former girlfriend cites her thriving career as the reason she chose adoption over conceiving. "I love performing in the theater, and you can't really do that when you're pregnant," she explains.

Congrats on beginning the journey toward parenthood Miss Madison!

Dave Proctor

Holly Madison took a break from her mega-successful Peepshow at Planet Hollywood to enjoy some down time at Flamingo's tropical resort GO Pool ... and even served as host for the afternoon.

We're told the former Girls Next Door star sipped on champagne in the cabanas and danced in the DJ booth. Nothing says Sin City like Holly at the pool!

See more of Holly hanging in Vegas ... after the jump.