Shereen Low has a girly chat with the Sugababes...
Chatting with the Sugababes is like catching up with your closest girlfriends.
Keisha Buchanan, Mutya Buena, Heidi Range and I have discussed make-up, handbags and fashion, and right now, we're admiring Mutya's svelte post-pregnancy figure.
"Mut was the smallest size ever during the pregnancy," says Keisha.
"We were actually bigger than her, and she was still wearing size 8 to 10 when she was pregnant! I didn't even know how she managed it. If it was me, I'll probably put on four stone!"
Mutya replies: "I never really had a big belly when I was pregnant."
Keisha adds: "We went clubbing when she was five months pregnant and we didn't tell anyone so no one really knew. She even got papped [snapped by the paparazzi] on my birthday party in a white dress and no one guessed."
The 20-year-old Londoner gave birth to her daughter Tahlia in March, and has already noticed the difference the new addition has made to her life.
"I think it's made me calmer, to the point where I don't go out that much or I don't go out at all. And you do things you haven't done for a long time," she says, drumming her long red talons.
"Things are a bit different and a bit calmer, and your mind just really concentrates on one thing. So at the moment, obviously I concentrate on her but then I have work, but they're the main things I need to think about. It does change you. I think it generally changes you as a person and makes you a better person."
Responding fiercely to stories that she "flung" her baby after she kept on crying, Mutya adds: "I wasn't happy when I saw that, because of the way they wrote it. It made out like I'm some vicious mum.
"Don't get me wrong. I did say that but it wasn't bad - it was meant to be funny. But obviously when you're reading something like that, you automatically think, 'Oh yeah, hmmm'."
Keisha, 21, interrupts, saying: "Sometimes when you're really tired and you just want to go to sleep and the baby's crying, you just say, 'OK, cry then'.
"I think every mother gets that phase. We know Mut so we know what she meant. Tahlia's very cared for and loved, especially by us."
So with all the baby talk that goes on, are the other two getting broody?
"I love babies, and I can't wait to have my own babies, but I don't want them yet," admits Liverpudlian Heidi.
Keisha partly disagrees, saying: "It's not something I've thought about. It makes you want to push it back when you think about how much your figure will change."
This trio has been through a lot, yet Heidi, the eldest of the group, is still just 22. Considering the ups and downs they've been through, from having a member leave to being dropped by their record label, it's no surprise they possess a maturity far beyond their years.
Taller In More Ways, their fourth album, sees the Babes with a more polished sound.
"I think we've definitely found ourselves with this album," explains Keisha.
"We've been trying to find out what we are for a long time - we're not rock, we're not R&B, we're not pop - and songs like Stronger and Hole In The Head are very different musically.
"We've never struggled with our sound, but we've always struggled with what genre our music is in. The thing that makes our music so recognisable are our voices singing together."
Heidi adds: "It's our fourth album and there's a lot to say - and we're stronger than we've ever been." Keisha continues: "This album is mature. You can definitely hear that we've all grown vocally, and it's a team effort. We're not just puppets on a string or the product of somebody else's imagination. This album is us."
The girls' new single, Ugly, is out on Monday and offers their frank views on self-esteem - something they have in abundance.
"The only time our weight became an issue was when they showed photos of us on holiday and called us Sugalumps. That bothered me at the time but I'm comfortable with myself now," says Heidi, who fluctuates between a dress size 8 and 10.
"It's a personal thing," says Keisha, who's a size 10. "Yesterday I had KFC and the day before that, I had pizza. And yeah, my boyfriend and I devoured the extra-large one with the bread and Hot Wings on the side afterwards as well.
"I did feel guilty after, but that's because I know I'm probably going to break out in spots the next day. But people shouldn't lose weight to extreme levels. Don't starve yourself and get in an issue over it because of what people say. So get confident and pick up that burger."
Another reason for their selfassurance could be because they're in love.
Heidi is going out with MTV TRL presenter Dave Berry ("It will be two years this month!"), while Keisha is with a basketball player she refers to as Zayne, and Jay is Mutya's live-in partner and Tahlia's father.
Despite being portrayed as being spiteful and unfriendly - amongst themselves and towards other bands - all three reassure me otherwise.
"People always make out like there's rivalry and find out if we don't get on with other girl bands, but we haven't got a problem with anyone," explains Heidi. "We get on fine with anyone and everyone. There's no drama."
It seems like the girls have also patched up any differences they may have had. Stories that Keisha and Mutya were mean to Heidi when she first joined (replacing Siobhan Donaghy when she left in 2001) have been denied by all three, who credit their success to their friendship.
"You can't be successful if you don't get along, especially in girl bands. Most of the time when they break up, that's the reason why," says Keisha. "I think once you find your common ground, you respect each other more.
"And I guess holding your mouth on a lot of occasions does help. I'm not the only child, but when I was growing up, I used to be bossy and spoilt because I got everything I wanted. Being in a group, you learn how to share."
She adds: "At the end of the day, it's about the music. I don't care if people say the Sugababes are moody cows as long as they think we make great music."
* Sugababes' new single, Ugly, is out on Monday. They play at Birmingham NIA on Saturday April 8