Kristin Cavallari's son Camden Credit:

Camden's closeup!

On Wednesday, Kristin Cavallari shared an adorable snapshot of Camden Jack, her baby boy with fiance Jay Cutler, via Twitter and WhoSay.

"Cam," the former Hills star, 25, captioned beneath a pic of her son, looking alert and curious in a white onesie and matching cap with Burberry-plaid trim. An additional shot showed Camden in full Chicago Bears regalia in a tribute to his quarterback dad Cutler, 29. (He's so excited about this win he can't contain himself," joked Cavallari of the Bears' most recent win.)

Camden is the first child for Cavallari and Cutler, who briefly split up in mid-2011 but announced a reconciliation -- and on-again wedding plans -- that fall.

The former wild child -- who's been rocking an impressive post-baby bod -- is settling in nicely to motherhood.

 "Being a mom is the most incredible feeling," she tweeted August 11. "I am so in love with this little boy!"