Kristin Cavallari: Expecting a Boy Again!

It will be another boy for Kristin Cavallari and Jay Cutler! The pregnant alumna of The Hills announced the news with a mustache, Instagram style.

This is what all the cool kids are doing nowadays, we're told.

"We decided to announce that....we're having another boy!! We couldn't be more excited!" Cavallari wrote, looking fantastic as always in her latest selfie.

Sweet stuff from a sweet mom, and soon-to-be growing family.

She's talked about having two kids back-to-back, and she's making good on it. Camden isn't even two, so his baby boy clothes will be back in the rotation!

Also, two kids in two little Cutler jerseys? OMG cuteness.

Congratulations to the Cutlers! It's easy to see why the 27-year-old Kristin ranks among The Hollywood Gossip's hottest celebrity moms (see gallery below) ...