Holly Willoughby has been signed up by Garnier as its newest spokesperson.

The nation's sweetheart will appear in the company's Nutrisse Pearly Blondes collection advert - set to hit the small screen on 4 July.

And the 33-year-old star insisted that she won't be changing hair colour any time soon: "Over the years I've experimented and I've pretty much been every colour - now I can't imagine being anything other than blonde.

"I truly feel that I have found my perfect base colour - I love it."

Holly is currently pregnant with her third child.