"I am a lot more body confident now I’m in my thirties, and am in better shape, too," she says.

Beckinsale, who struggled with anorexia when she was 15, says that she's very comfortable with her eating habits. And even allows herself cake!

"My typical daily diet is eggs or oatmeal for breakfast, a chicken or vegetable wrap for lunch, then fish and vegetables for dinner. But if someone turns up with cupcakes mid-afternoon, I’ll have one. I’m not aiming to be Gisele [Bundchen]. And I’d hate to be one of those people who won’t allow themselves a slice of birthday cake," she says.

And screw everyone who thinks differently about how she should look!

"I'm amazed that people obsess over my body image so much. Why do we encourage this war on women's bodies? It's a horrendous way to live, and I refuse to," she says.

Of course, it helps to look like this, too.