Gwen Stefani has revealed that she feels "guilty" about being a working mum.
The No Doubt frontwoman, who has two sons with British musician Gavin Rossdale, admitted she had doubts before the group recorded their new album Push And Shove after an 11-year break, because she felt she was "missing out" on home life.
She told US Vogue: "Getting to the studio and not being able to make it happen, but missing out on being at home, missing out on putting the kids down. What's more important? I felt so guilty.
"I am letting everyone down in the studio right now; I'm letting down my kids; I'm letting down myself. Because time was so precious."
Gwen, who graced the front cover of the magazine's January issue, admitted motherhood presented a new set of challenges.
"It's super fun being a mum, but it's not what you think it's going to be. And it's really gradual," she said.
"At first, your life is totally the same. You have this cute little thing that you get to drive around everywhere and you're so proud and it's amazing. And as they grow older, it really does start to change your life. Like, 'Oh, my God, they have school, they have to get through first grade, they have to learn to read'. When you have a family of your own, it forces you to go into the adult world a little bit more."
Gwen, who joined Gavin on stage recently, admitted that marriage takes work.
"You have to work at it. But, actually, it's fun to get to this point. Because you learn so much about somebody. You get stronger," she revealed.
"Having kids takes the whole relationship to another place. It is the ultimate collaboration."