Kelly Clarkson is "super thankful" she won't be having any more children.

Kelly Clarkson

Kelly Clarkson

The 'Breakaway' singer adores her daughter River, two, and son Remington, six months, but experienced difficult pregnancies, so she has had her tubes tied and her husband Brandon Blackstock has undergone a vasectomy to ensure they won't have any more kids in the future.

She admitted: "I am super thankful I'm never going to be pregnant again.

"I have my beautiful children and I'm done!"

And the 34-year-old singer - who is also stepmother to Brandon's older kids, Savannah, 14, and Seth, 11 - admitted it is "pretty hard" to juggle her work and her family life, but she thinks it is important for her to do both in order to be a good role model for the children.

She told 'Extra': "We're still working on [the balance].

"It's pretty hard, being a working mom -- I'm not gonna lie -- but it's worth it for not only my little girls, but our boys to see women working and still being able to do that and accomplish being a great mom, which I feel like I'm doing. I think it's worth it definitely...

"I have a great teammate with my husband. He will definitely reel me in when I'm like, 'It's all going down, we're losing it!'"

Kelly recently opened up about how she experienced "the worst pregnancies ever".

She said: "Nausea is for weak people. It was, like, hospitalisation. It's, like, bad. I had the worst pregnancies ever. I would end up in the hospital, dehydrated. People had to come to our house and I'd be on fluids.

"Apparently that's what it takes to make amazing babies, because they're both stellar. We've made them and it's done."