Kimberley Walsh thinks having two young children is going to be "really hard".

Though they wanted their children to be close in age, they are aware that means it will be tricky juggling both their needs.

Kimberley said: "It's going to be really hard, I'm fully aware.

"Bobby is just getting easier and now we're throwing another one into the mix. But I always wanted to have children close together and at least I know what I'm doing a bit more this time."

The 34-year-old singer is also "dreading" sleepless nights again but knows it's just a part of parenthood.

She said: "I'm not going to pretend I'm not dreading going back to [sleepless nights], but you just get on with it.

"The adrenaline of having this new baby keeps you going. You just have to suck it up."

Kimberley hasn't found out the sex of her unborn baby, but thinks she might be expecting a girl as her pregnancy has been so different to her first.

She said: "It's completely different to my last pregnant. My skin went really bad when I was pregnant with Bobby. I'd never had spots before but I had loads of breakouts, a rash. It didn't agree with me at all.

"This time though it's actually helped my skin. I've got that pregnancy glow so I'm quite grateful.

"You do think [it could be a girl] and wonder if it's different hormones. I haven't had any pregnancy cravings either - with Bobby I was obsessed with really spicy food."

Bobby is very excited at the thought of having a new sibling to play with.

Kimberley told Britain's HELLO! magazine: "I love being a mum and Bobby is just hilarious at the moment. He's really coming into his own and talking loads.

"He knows that the baby is coming and keeps telling people.

"He puts his head on my stomach and I pretend the baby is kicking because you can't always time it to kick at that moment."