Kristin Cavallari showed her tiny baby bump while out in L.A. on Nov. 19 Credit: FAMEFLYNET PICTURES

Kristin Cavallari is one chic mom-to-be. Though the pregnant Hills star is still super tiny, she's starting to show just the tiniest bit in her belly -- and on Tuesday, Nov. 19, she proudly revealed her ever-so-slightly curvier bod while walking through LAX.

Dressed casually in black leggings, a clingy black top, black ankle boots, and a beige cardigan, the 26-year-old MTV alum looked relaxed and radiant. She appeared almost as slim as ever, except for her little baby bump.

Married to Chicago Bears quarterback Jay Cutler since June of this year, Cavallari confirmed her second pregnancy last month via Twitter. She and her husband already have a son, Camden, 14 months.

"I would love to have a little girl, but if I had another boy, that would be great, too," she told Us Weekly in September, noting that her son was a "walking machine" and "trying really hard" to talk.

"He says, 'Mom,' and that just melts my heart," the former Laguna Beach star gushed. "It's amazing."