"I cop a lot for being slim," she told New Idea.
"I get lots of comments about my body from strangers. I get called too skinny and gaunt."
However, the mum of one has been working hard since welcoming her son two years ago.
"Since having Xav, I’m probably fitter than I was before," she said.
Harry, 32, agrees.
"She loves walking and going to the gym," he told New Idea.
'I mean, look at her! She looks so fit, she’s like a supermodel!"