Kristin Cavallari Post-Baby Body: 'The Hills' Star Wears Skin-Tight Blue Dress For 'GMA' Appearance

Kristin Cavallari is looking great just months after welcoming her second son.

During an appearance on Monday's episode of Good Morning America, the former Hills star showed off her incredible post-baby body in a tight, blue dress that didn't leave any rumor for error.

"In a long-sleeve, fitted blue Torn By Ronny Kobo dress and leopard print shoes from her own Chinese Laundry line, the mother of two, 27, looked incredibly fit and trim, posting a full-body image of her ensemble on Instagram," Us Weekly reported on Aug. 26.

Cavallari and her husband, Jay Cutler, welcomed their second son, Jaxon Wyatt, on May 7. The couple, who wed in June 2013, are also the parents of 2-year-old Camden Jack, who arrived on Aug. 8, 2012.

Since giving birth, Cavallari has been hitting the gym hard -- and sharing her process with her fans online and through her lifestyles app. In addition to sharing healthy recipes, Cavallari has also posted several photos of her fitness progress on Instagram.

Also on Instagram, Cavallari shared a photo of Monday's look, along with the caption, "#OOTD from @GMA dress @tornbyronnykobo shoes by me Kristin Cavallari by @chineselaundry."

On Good Morning America, the mother of two discussed the fashion seen on the MTV Video Music Awards red carpet, crowing rapper Iggy Azalea, who wore a silver Versace gown, as the Best Dressed of the night.

Although Cavallari thoroughly enjoys motherhood, she recently admitted that being a mother of two certainly comes with its challenges.

"It's a lot easier in the sense that you know what to do and expect, so you have a lot more confidence," she told Michigan Avenue, via Us Weekly. "But you have zero time to yourself now. Camden takes a nap at one o'clock, so when Camden's going down, Jax is just waking up to eat and play, so there's literally no time."