Jennifer Love Hewitt has criticised photographers for promoting a negative image of the ideal female body.
Pictures of the Hollywood actress, taken during her holiday with fiancé Ross McCall, were recently published - with newspapers commenting negatively about her weight and appearance.
Hewitt has criticised the photographs in her blog and expressed frustration about the way women's bodies are "constantly scrutinised".
She added such coverage meant women were "struggling with their body image".
The Ghost Whisperer star said: "A size two is not fat! Nor will it ever be. And being a size zero doesn't make you beautiful.
"What I should be doing is celebrating some of the best days of my life and my engagement to the man of my dreams, instead of having to deal with photographers taking invasive pictures from bad angles."
Hewitt urged women to be proud of their appearance and to not feel conscious about their bodies.
"I know what I look like, and so do my friends and family. And like all women out there should, I love my body.
"To all girls with butts, boobs, hips and a waist, put on a bikini -- put it on and stay strong," she stressed.