Kristin Cavallari stuns in a red gown as she heads out on July 27 to the International Fashion Film Awards. Credit: Fern / Sharpshooter images

Lady in red!

Once again, Kristin Cavallari showed off her impressively slim body just two months after welcoming her second son, Jaxon, in May.

The Hills alum, married to Chicago Bears quarterback Jay Cutler since 2013, wowed in a ruby red Zac Posen gown, paired with a Glomesh bag and L'Dezen jewels, at the International Fashion Film Awards on Sunday, July 27, in Beverly Hills. The fitted satin dress featured a mermaid silhouette and sweetheart neckline.

"I thought the color was so perfect with fall coming up," the mom of two, 27, told Us Weekly on the red carpet. "It's such a hot color."

Even though she's had two kids in two years, Cavallari isn't about to start wearing mom jeans or coordinated sweats. "I think because you're a mom it doesn't mean you have to sacrifice style and all of a sudden become a new person," she told Us. "I'm still me, and I still like the same clothes."

However, she does concede to one fashion tweak: "I wear a lot more flats."