The crew hosted the much-loved Kiwi kids' programme together in different variations from 1996 when Anthony was the first to start, until 2006 when Carolyn was the last to leave.
Fans from that era took to Instagram to comment on the photo calling it "iconic" and "nostalgia at its finest".
"I grew with you guys too!! I'm so glad I got to be apart of the last good kids TV shows! Honestly I was always excited to get up on a Sunday morning and watch you guys!," one wrote.
Another said: "This picture is how I will always remember What Now. Full of laughs and love and smiles. They should do another reunion show and bring you guys back."
While another added: "Definitely best of the best. Don't think there's a Kiwi kid alive that hasn't had their Sunday morning entertained by @whatnownz."