Dermot O'Leary and his wife Dee Koppang are expecting their first child together.

The presenter confirmed the news in an adorable Instagram post on Saturday night. "We’re pleased to announce that we’re expecting a little Koppang O’Leary," he captioned the post, which said their new arrival would be 'coming soon.' Fans and friends rushed to congratulate the TV host on the happy news. The couple have been together for 17 years, and have been married since 2012. Speaking to Fabulous last year, the 46-year-old shared what he thought were the secrets to a happy - and long-lasting - relationship. “We don’t have the recipe, but it’s going well,” he says. “It’s a work in progress, isn’t it? The key for me is giving each other space, not giving each other a hard time and actually having fun together. And we do.” O'Leary also revealed why they decided to keep their relationship mostly under wraps and maintain a "normal life." “Oh god no, that’s my idea of hell. But at the same time I don’t want to hide my wife away! So I’m never going to turn down an invite for something really cool. Some mates of mine, largely in music, have almost become prisoners in their own homes. You can’t live like that," he said. “It’s about the neighbourhood you live in. If you embrace the greengrocers, the local store, the dry cleaners, you just become a face and part of a community. And that’s how you have a normal life.”