Sarah Ferguson Sarah Ferguson

Sarah Ferguson, who was formally known as the Duchess of York, debuted a dramatic weight loss at The Theory of Everything premiere.

"I used to be so angry," Ferguson told Hello! earlier this year. "I believed I was never going to lose the weight, that I had lost control. I couldn't fit into any of my clothes. I was just drowning in eating, drowning in food."

In order to get healthy, the former Weight Watchers ambassador cut out sugar and stuck to an exercise regime, helping her lose 50 pounds in five months, Us Weekly reports.

"It took courage to go out in public in all the years I have been overweight. Every time there was a 'Duchess of Pork' or 'Fat Frumpy Fergie' headline, they didn't have any idea they were reaching to the depths of my soul," she said. 

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