March 26, 2015 08:45 PM

Kevin Mazur/WireImage

Molly Sims‘s everyday life just got a little sweeter: her baby girl is here!

The model, 41, and her husband, film producer Scott Stuber, 46, welcomed their second child, a daughter, Sims announced Thursday on her website.

“On March 25th, 2015, Scott, Brooks and I welcomed a baby girl, Scarlett May Stuber, into the world! Our little bundle of joy weighs in at 7.7 lbs. and is 21 inches long,” she writes alongside a photo of her newborn baby girl.

“Momma and baby are doing well. We are thrilled that the newest addition has finally arrived and we are so excited that we are now a family of four!”

The author of The Everyday Supermodel has had a busy pregnancy since her September announcement that she was expecting her second child.

As Sims brushed up on her stylish bump skills, the mom-to-be imagined what life would be like if she had a daughter.

“I’d love to have girls,” she told PEOPLE in October. “I dream of pigtails and tank tops.”

And in January, her dreams came true when the couple found out they would be welcoming a daughter. As Stuber worked on putting together lists of potential names, Sims — who was open to a natural birth after her previous c-section — started prepping Brooks for his new baby sister.

“He told me yesterday that he had a baby in his belly,” Sims told PEOPLE in February. “I was walking down the stairs a couple of days ago and he goes, ‘Mama has a big belly’ and I’m like, ‘Yes, she does.’ “

Before her baby girl’s big arrival, Sims was showered with love by her close family and friends during a backyard baby bash.

“I’m so excited for our daughter to arrive, but at the same time, I’m going to miss alone time with [Brooks],” she told The Bump. “It’s something I really cherished these past two and a half years.”

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(Photo by Gia Canail.)

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— Anya Leon

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