Kelly Clarkson says the most "horrible" part of her divorce is the kids.

Kelly Clarkson

Kelly Clarkson

The 'Since U Been Gone' hitmaker - who has River Rose, six, and son Remington Alexander, four with her estranged husband Brandon Blackstock - worries about how her children are taking it.

In a chat with Alicia Keys and Glennon Doyle on her talk show, The Kelly Clarkson Show, she admitted: "Glennon, you write about the public fallout from your divorce – I’m obviously going through one right now. It’s horrible. There are so many hard parts. The hardest for me is the kids. That’s the hardest for me. I think as women especially we’re trained, Alicia and I were talking earlier, to take it all on and you can deal with it and you’re fine, but it’s your babies that you worry about."

It comes after Kelly confessed that "divorce is a really s***** thing".

She said: "I've been through two divorces in my family, husband as well in his own family as a child. We didn't have social media around when that happened. And, like, having kids that run the gambit of four to 19 is a really tough thing. And, you know, I've had conversations with one of our eldest about how difficult it is in the public eye when your parents are so... you know, one of them is so prominent and having to navigate that for them is hard on their hearts. I'm just careful also while being real... And I don't think that anything is - like I said - nothing's wrong with anybody, it's just... it happens, and that's why there's nothing to hide about it in that sense. You know, it's just, divorce is a really s***** thing."

Kelly was recently given primary custody of her and Brandon's children in their divorce.