KRISTIN CAVALLARI says motherhood is the ''most rewarding job'' she's ever had.

The 26-year-old reality TV star and fiance Jay Culter welcomed son Camden seven months ago and although there are ''tough moments'', Kristin loves being a mother.

She told 'Access Hollywood': ''There are tough moments but it's the most rewarding job I've ever had. Cam is seven months now and every day is so exciting. He is such a sweet and happy guy and makes every day wonderful.

''Jay is the best dad, I've had to travel for work in the past few months and Jay has been home with the baby. We don't have a nanny, he is such a hands on dad. One of his sisters has a one year old boy so that has helped.''

Kristin also revealed the pair can't wait for their summer wedding which they are keeping to just family and friends.

She said: ''We have a wedding planner, I'm very involved and so is Jay, it's been a fun process for us.

''We've managed to keep the date a secret. Our list is small, 160, our closest friends and family so if the date got out it would be a bigger problem.''