0507_kcav_launch
Kristin Cavallari
is now a mother-of-two!

The former "Hills" star welcomed her second child, a baby boy, with hubby Jay Culter on Wednesday.

Sharing the big news on Instagram, Kristin posted a super cute candid of her son's new gear.

"Welcome Jaxson Wyatt Culter 7lbs 11oz 5/7/14," she captioned the sweet snap. 

The couple already share a son together, Camden, who will be turning 2-years-old this summer. 

It's definitely been a great year for the 27-year-old -- she also recently landed a hosting gig on E!'s "The Fabulist." 

We can't wait to see some photos of her little man! Click "Launch Gallery" above to see even more cute celebrity kids!