Like the rest of us, the Pussycat Dolls watched in amazement last year as Danity Kane disintegrated on "Making the Band." Unlike the rest of us, though, they had a different perspective on things: They knew DK personally.

So when MTV News spoke to the Dolls backstage at the kickoff of Britney Spears' Circus tour, we decided to ask them about the breakup of Danity Kane, the fallout after that split and the pressures of keeping a girl group together.

"We are sisters," PCD's Ashley Roberts said. "And there's moments where no matter who you are, you're going through personal things, as well as things in your career, and so sometimes your head's not in the right place or you're emotional about something, and we have times where we're going through stuff, as every human being does, but we try to not take it personally and to communicate. And about Danity Kane, it's a sad thing that they did fall apart. We had been on tour with them, with Christina [Aguilera in 2007, on her Back to Basics tour], and we got to know each one of them, and we wish them each their own success. I know Dawn [Richard] and Aundrea [Fimbres] are getting together, and so power to them."

So while PCD are saddened by Danity Kane's split, they can also understand why it happened. After all, being an all-girl group is tough, especially one that operates almost exclusively under the spotlight. After all, they've been doing it for nearly four years now. But they've learned how to make it work, thanks to some advice from some fairly high-profile friends.

"You know, a couple of years ago, we were hanging out with U2, and I made friends with the Edge, and I talked to him like, 'Wow, you guys get along so well, and you're so successful,' and one of the things he sad was that envy is evil, and to make sure you understand your place in the group and understand that everyone has their own spot in the group. It fits like a puzzle," Doll Jessica Sutta said. "We've managed to have a lot of respect for each other, because we've built a sisterhood, and we love each other, and we know that when we're onstage, each one is as important as the next. You know? Nicole is our lead singer, we support her as she supports us ... we make it work."

"Touring is not easy," PCD's Kimberly Wyatt added. "Being in a girl group is not easy. But it's all about being passionate, and we all grew up believing in dreams that were bigger than us, and we served a bigger purpose in life. And I believe that we are together for a reason: to tell a story. We're not only girls in little clothes that get onstage and sing amazing songs and dance our butts off, we have a purpose in life. We have a lot of younger fans that look up to us, and we take our roles very seriously, and we do our best to spread our positivity and love to everyone."