Kirsten Dunst believes she would be thinner if she was single.

She told Net-a-Porter's The Edit: "I've got a little bit more of a tummy now, so although I own about 20 pairs of jeans, I'll wear the same three for a year because the rest are from when I was skinnier.

"I guess if I wasn't comfortable and in a relationship I'd be thinner.

When you're with someone, you eat so much more and you chill out for a bit--but I don't criticise myself more than is healthy, because there's such a lot of that, isn't there?"

The 'Upside Down' star also slammed some women and magazines for their negative portrayal of the female body image.

She said: "Whether it's girls among themselves or magazines, it's all about women tearing apart other women.

"I don't get why that's so prevalent right now."

Meanwhile, Kirsten has admitted she is ready to settle down with her beau.

She added: "Thirty-three is a good age to have your first baby. I'm in baby mode because two of my really good friends are pregnant right now."