A delighted Holly, mum to one-year-old Harry, has tweeted: "Thank you so much for voting me 'mum of the year!' it's such an honour and I'm absolutely thrilled... Thankyou xxx"
The British public certainly are fickle - Coleen Rooney, who had held the number one spot for most of the voting, was knocked of the top by Holly in the final days. Coleen's recent luxury holiday to Dubai without baby Kai led to a sudden drop in Coleen's popularity, leaving real mums unable to relate to her lifestyle.
Dannii Minogue was the other seriously close contender in this year's contest. Only three months into motherhood, Dannii has shown the nation her maternal instinct mentoring her brood of X Factor boys and proudly sharing the first picture of her son Ethan on Twitter rather than in a glamorous magazine shoot.
With a record 32,000 votes, this year's award was the most hotly contested to date. Holly also faced stiff competition from Bernie Nolan, who has faced a tough year after being diagnosed with breast cancer, and bookies' favourite, Samantha Cameron, who came in at fourth place.
Faye Mingo, Parenting Spokesperson for Bounty.com said, "We are overjoyed that Holly has won. Holly is a great example of being a working mother and having it all! Holly's career is going from strength to strength, from her clothing range to presenting yet she still maintains balance in her family life. This really is a week for celebration for Holly as she announces her second pregnancy - congratulations from all of us at Bounty!"
The top ten celebrity mums are as follows:
1. Holly Willoughby
2. Dannii Minogue
3. Bernie Nolan
4. Samantha Cameron
5. Davina McCall
6. Coleen Rooney
7. Jools Oliver
8. Myleene Klass
9. Tess Daly
10. Charlotte Church