Holly Willoughby is celebrating seven years on 'This Morning'.

Holly Willoughby

Holly Willoughby

The bubbly blonde presenter wished her seven-year-old son Harry a happy birthday live on air on Wednesday (11.05.16) and revealed she first started on the ITV morning show the year he was born.

Holly said: "It's my son Harry's seventh birthday today and I always wish him a happy birthday.

"But I use his birthday to work out how many years I've been on the show because that's the same year I started on 'This Morning'. So I've been on 'This Morning' for seven years today.

Her co-star Phillip Schofield quipped: "I don't even know when I started now, a long time ago."

Holly took over as co-presenter in 2009 when Fern Britton stunned fans by quitting after 10 years in the role, saying she wanted to spend more time with her family.

And Holly, 35, recently admitted that she and Phillip, 54, are often mistaken for a couple.

The pair have worked alongside one another TV, first on 'Dancing on Ice' and later on 'This Morning' for over a decade and, although they're both happily married to other people, Holly said they're often on the receiving end of funny looks and bizarre comments about their platonic relationship because the two families regularly go on holiday together.

She said: "I do think that when we would bump into people, we went to Portugal, and when people would see us in a bar, they'd all be looking at us as if to go, 'Oh my God are you like actually together in real life?' I'd be like, 'No It's just a coincidence that we're away!'

"He has been holidaying in Portugal for years and I've been going the last few years so we tend to accidentally bump in to each other... not that accidentally."