Kristin Cavallari has given birth to a baby boy.

The former 'The Hills' star and her husband Jay Cutler, who already have 19-month-old son Camden, welcomed their second child Jaxon into the world today (07.05.14).

The 27-year-old shoe designer took to her Instagram this evening to announce the arrival of her new bundle of joy, who weighed a healthy 7lbs 11oz, along with a picture of some cute booties, a baby hat and her hospital band.

She wrote: ''Jaxon Wyatt Cutler 7lbs 11oz 5/7/14 (sic)''.❤️

The blonde beauty announced she and her beau, whom she married last year, were expecting another baby together back in October 2013, before revealing the tiny tot's sex in February.

Kristin previously claimed she wasn't nervous about the birth and couldn't wait to meet her baby son.

She said earlier this year: ''The first time [you have a baby], you're anxious, you're nervous, you're excited, you have so many emotions. It's like the closer you get to your due date, you're ready but you're also not quite ready, so you don't mind if the baby stays in there. But this one, I'm like, 'Let's get him out here, I want to see him, I just want to hold him and see what he looks like'.''

However, Kristin was feeling anxious about how Camden would react to their new arrival.

She said: ''I don't want him to feel like he's being replaced. I know the first few months are going to be hard when I'm breastfeeding all the time. We're just going to try to be so careful to make sure he's still getting a lot of attention, knows he's still extremely loved and this baby is in no way taking his spot.''