Mariah Carey and Nick Cannon to Introduce Twins on 20/20

 Kevork Djansezian/Getty

Moroccan and Monroe are finally ready for their closeup!

Nearly six months after welcoming a twin boy and girl — their first — Mariah Carey and Nick Cannon are ready to introduce their bouncing babies to the world.

And Barbara Walters, naturally, is just the woman to help them do it! The ABC vet sat down with Carey, Cannon plus son Moroccan and daughter Monroe, born April 30, in the family's NYC pad.  Grammy-winner Carey, 41, announced the news on her website: "Mariah and Nick recently sat down with Barbara Walters in their New York apartment to discuss Mariah's pregnancy, their marriage, their beautiful baby twins Monroe and Moroccan and much more."

The 20/20 interview — and the first real glimpse of the couple's kids — airs on ABC Oct. 21 at 10 p.m.

The couple's two kids might not be the only big reveal on Friday's show: Carey has been slimming down big time since giving birth.

"She's so focused right now on every aspect. She's going to come back and knock out the world," Cannon, 30, told Us Weekly in mid-September. "She's getting in shape."

"At two months she was walking around in a bathing suit," he said. "I personally think she's going to come out looking better — looking like it's 1990! I think that's what she's aiming for, and I think she'll reach that goal."

Sign up now for the Us Weekly newsletter to get breaking celebrity news, hot pics and more delivered straight to your inbox!

Want stories like these delivered straight to your phone? Download the Us Weekly iPhone app now!