On Wednesday, October 21, the fashionista Kristin Cavallari announced that she is preparing to have her baby girl into the world.

The Hills alum shared her blooming baby pose in a handsome Instagram photo.

"It's hard to believe I will be a mom of 3 in just a few short weeks," the pregnant  28-year-old star, captioned in the black and white snapshot. "I owe so much to my babies...they have changed me in so many ways for the better."

Kristin and her husband Jay Cutler are awaiting their third child together. The couple married on 2013.

Cavallari and the 32-year-old Chicago Bears quarterbac, are raising their children in both Nashville, Tenn., and Chicago.

This past year, Cavallari chronicled all of her mommy adventures in her new book, Balancing In Heels.

"I talk about my journey to mommy-hood, my pregnancies, and how these little guys have made me who I am today," Cavallari said of the book in her Instagram post on Wednesday. "The mommy and wife chapters are incredibly raw and real. I don't sugarcoat anything."

Kristin has already two sons, 17-month-old Jaxon Wyatt and 3-year-old Camden Jack.

On May after coming out with the news that she was pregnant, the reality star revealed she was expecting a girl on her Kristin Cavallari Official app.

Kristin shared a photo announcing the news, which captured herself beside Jay as she clutched a pair of pink trainers.

She captioned the photo with, "The boys are so excited for a little sister!!!!!!" 

Kristin and Jay, celebrated their second anniversary on June. They started dating in late 2010 and got engaged in April 2011. They briefly split up that same year, but reconciled in November and were married in June 2013 in Nashville, Tennessee.

Cavallari confessed in an interview that she's always had a baby girl's name in her back pocket. When she was pregnant with her first son, Cavallari was inspired to name her future daughter after a woman's dog.

The 28-year-old explained to Cricket's Circle, "We picked out this baby girl's name when I was pregnant with our first. I met a woman and her dog, and I loved her dog's name. Funny enough, it was the name she had picked out if she had a girl, but she had boys, so she used it for her dog instead. Here we are 3.5 years later, and we are going to use that name for our little girl!"

Cavallari's little girl will be born in November 2015 and it appears that she's keeping her favorite name a surprise (at least to the public) until after then.