Article continues below advertisementLooking fab! Kristin Cavallari isn't afraid to flaunt her fit physique on social media, and she sure looks great while doing it. The 38-year-old recently revealed she put on some weight, but she's feeling like her best self. Article continues below advertisement"I've been sitting on this picture for a few days going back and forth on if I should post it or not. Ultimately I decided to bc I've come a long way from a few years ago and I'm really proud of the progress I've made. I don't even recognize the girl in those other 2 photos..