EXCLUSIVE: Mariah Carey Stuns in Sexy Cutout LBD, Says She and Ex Nick Cannon Are 'Together When it Counts'

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Mariah Carey’s not a regular mom, she’s a cool mom! The pop diva stepped out on Tuesday night at her Butterfly MC Records Launch Party at Catch LA looking gorgeous in a bold Bryan Hearns cutout dress.

WATCH: Mariah Carey and Nick Cannon Read 'Bedtime Stories' to Twins -- See the Family Photo

“He made it a couture number, an ensemble,” Mimi told ET’s Kevin Frazier the event.

The “Always Be My Baby” singer dazzled in the revealing ensemble, and she was eager to gush about her twins, Monroe and Moroccan, who just turned six.

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“I can't believe they're six. They love -- they've always loved Disneyland. And we just thought it would be the best place for the party. So it was good,” she said of the recent family outing. “I mean I didn't go to Disneyland ‘til I was -- you know I'm eternally 12 so I don't have numbers -- but I didn't go to Disneyland as a kid… So it's such a special place and it was just the right place for their party and I think they had fun with their friends. And it was nice.”

Carey was joined in Disneyland by her ex-husband, Nick Cannon, who also attended her launch party, which begs the question -- why can’t these two get back together?

“We're together when it counts. We're together for the kids. And I think that's the most important thing,” the proud mom explained.

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Cannon agreed, telling ET, “It's so perfect right now honestly, I'm working on being the best me that I can possibly be and from that I'm working on being the best father that I can be and that's a plate full right there. I love her, I adore her, that's always going to be my dream girl but I think as mature adults I think we just operate better with the way things are right now.”

At the end of the day, Carey and Cannon’s first priority is their children.

MORE: Mariah Carey and Nick Cannon Bring Their Twins to Disneyland for 'Dem Babies Sixth Birthday Bash': Pics!

“We both love kids and we're co-parenting because that's the only way to do it,” Carey said.

“I mean, friends at the end of the day and beyond friends, we’re family, you know what I mean?” Cannon added. “We put the kids first and I think as weird as it may look from the outside it’s a very simple concept. I’m there when my kids need me, and I'm trying to be there as much as possible.”

Mariah is getting ready to hit the road with Lionel Richie for her "All The Hits" tour, kicking off June 21 in Oakland, Calif.

For more from the star, watch the clip below!

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