Kristin Cavallari shares pregnancy workout routines with fans

CHICAGO, July 22 (UPI) -- Kristin Cavallari is determined to stay fit during her third pregnancy.

On Tuesday, the former reality star shared a photograph of herself working out, showing her baby bump and favorite fitness move. The 28-year-old shared with other expecting mothers, her favorite workout routines while pregnant, on her own mobile app.

Some of my favorite pregnancy workout moves up on the app Kristin Cavallari in the App Store

A photo posted by Kristin Cavallari (@kristincavallari) on Jul 21, 2015 at 6:24am PDT

Besides showing off exercise options, Jay Cutler's wife has been documenting her pregnancy style on social media, and in a recent picture she posted, she wrote, "Dressing for the bump."

Dressing for the bump #pregnancystyle

A photo posted by Kristin Cavallari (@kristincavallari) on Jul 17, 2015 at 9:07am PDT

In May, Cavallari shared the news that her and Cutler were expanding their family. Earlier this month, she revealed that her two other sons, Camden Jack, 2, and Jaxon Wyatt, 1, were getting a little sister.