Click through the gallery above to see Brooke Burke-Charvet, Soleil Moon Frye, Christie Brinkley and more stars' diet and exercise secrets!
Kate's secret to staying fit? Cutting sugar from her diet! "That was an eye-opener for me, I realized I was craving [sugar] like an addict around 4 p.m. every day. I would crave something sweet and it hit me how much sugar we really eat," the star said during an interview for Jimmy Choo's Autumn/Winter 2015 campaign.