In a blog piece Michelle wrote that she was delighted to have won the award.
'I think all mums would agree that having a family is so rewarding, but it's definitely a juggling act,' writes Heaton, 34.
'Like any mum I always make sure family comes first but I also enjoy other areas of my life like performing - it's all about finding the right mix.'
The brunette star, who made the brave decision to have her breasts removed in November 2012 after finding out she had an 80% chance of developing cancer, added that she is enjoying watching her children grow up.
'I'm really looking forward to what's in store for us as a family,' adding that she'd like to take all of them on holiday once AJ, who was born in February this year, is old enough.
Michelle and husband Hugh Hanley also have a two-year-old daughter, Faith.
'I absolutely can't wait to put my Disney Celebrity Mum of the Year award up in pride of plce at home next to my Brit award!'
The award is voted for by the public, and also celebrates other mums from around the country.
Michelle was up against celebrities such as Abbey Clancy, Amanda Holden, Davina McCall and Una Foden for the title.