Pregnant Kristin Cavallari Will Be Mom of Three in a “Few Short Weeks”: New Baby Bump Photo!

That glow though! Kristin Cavallari is ready to welcome her baby girl into the world. The Hills alum embraced her growing baby bump in a gorgeous new Instagram photo on Wednesday, Oct. 21.

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

The reality star-turned-shoe designer announced in May that she and her husband, Jay Cutler, are expecting their third child together. The couple — married since 2013 — are already parents to sons Camden, 3, and Jaxon, 17 months.

Cavallari and the Chicago Bears quarterback, 32, raise 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.

Kristin Cavallari and Jay Cutler
Kristin Cavallari and Jay Cutler attend the JDRF LA 2015 Imagine Gala. Todd Williamson/Getty Images for JDRF

"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."

Sign up now for the Us Weekly newsletter to get breaking celebrity news, hot pics and more delivered straight to your inbox!

Want stories like these delivered straight to your phone? Download the Us Weekly iPhone app now!