Rosie Huntington-Whiteley was told to lose weight by fashion bosses when she first became a model.
The stunning 24-year-old model and actress has never worried about her weight and was shocked when she was advised to work out if she wanted to succeed in her chosen career.
She said: "I can't remember a time where I really battled with my body, but I can remember being asked to lose weight and battling with the advice.
"It hurt me. Especially as my baby fat naturally melted away as I got older.
"When I started out, I was definitely heavier. I was quite voluptuous in fact. I had a real baby face and baby fat.
"But I was a baby! I was told I had to get into better shape, but I'm quite stubborn so I didn't."
Although Rosie admitted she now loves working out she claims she does so for energy rather than to stay in shape.
She told Britain's Elle magazine: "I don't just work out to stay slim, I work out because it takes a lot to be on a plane and be jet-lagged all the time. Same with being on a film set for months."