American talk show host and television executive Andy Cohen will replace ousted comedian Kathy Griffin as co-host of CNN's New Year's Eve Live broadcast.
Griffin and Cooper have co-hosted CNN's New Year's Eve Live since 2007, however she lost the gig earlier this year in the wake of a photo scandal in which she was pictured holding a replica of the bloodied head of US president Donald Trump.
Cohen and Cooper are friends; they perform a series of speaking gigs together and Cooper is a regular guest on Cohen's US talk show.
It was during an interview with Cohen that Cooper first addressed the rift between he and Griffin in the wake of the scandal, during which Cooper had denounced the photo stunt.
"We're still friends," Cooper said. "I didn't think [the photo] was appropriate but I wish her the best and I hope she bounces back.
"She's incredibly funny and a lot of people love her, and I think she'll bounce back from this."
Griffin, however, told Fairfax Media later that her friendship with Cooper was essentially over.
"I don't think I paid a price. I think he did," she said. "I'm sorry to say that because I loved him. He wasn't just my friend I liked. He was my friend I loved. That part just hurts."
Griffin said she felt Cooper had been pulling away from the friendship for some time.
"He's been kind of pulling away for a couple of years and obviously I wouldn't talk about that publicly because we still [had] a show to do, you know what I mean?" she said.
"I still had the most fun ever during that evening and even if we weren't necessarily close and the last couple years... and even if we weren't tight, I always loved making him giggle."
CNN has aired its New Year's Eve Live program since 2001; Cooper took over as host in 2002.
It is traditionally hosted from Times Square in New York, but included crosses to CNN correspondents at other locations and musical performances.
It is broadcast on the US CNN service and the CNN International channel, which is broadcast in 190 countries including Australia.
In the US it is watched by around three million viewers; its global audience is not measured but would be significantly larger.