Kelly Clarkson swears "like a sailor".
The 32-year-old singer - who has eight-month-old daughter River with husband Brandon Blackstock and is stepmother to his kids Savannah, 13, and eight-year-old Seth - is trying to moderate her language more because she knows she shouldn't curse in front of the children.
She said: "Unfortunately, I curse like a sailor. My favourite swear word rhymes with duck, so...
"I gotta quit that though. I've got an eight-month-old baby and two kids so I can't be saying that."
Though Kelly had a difficult pregnancy, she feels very lucky because River is such a "perfect" baby.
She said: "I have the best baby in the world. I travel with my baby and she's perfect.
"I think babies can be so difficult, as I've heard from other parents, and granted, I had the worst pregnancy ever, but she was totally worth it.
"That is the best part of being me - I pop out magical children."
The 'Stronger' singer adores her work, but admits she sometimes questions whether the sacrifices she makes are worthwhile.
Asked what advice she would give her younger self, she told heat magazine: "Run! No. I guess I love the industry I'm in because I get to do what I love, which is to sing and write.
"But sometimes it's a very crap industry - sometimes you feel like you sacrifice a lot and sometimes you wonder if it's worth it.
"No, I'm just kidding. I wouldn't tell her that."