"We always joke that we have this fabulously gorgeous 17-year-old model who is six-foot-whatever and I say, 'ok, I'm going to put it on - I stand for the general public here.' It's how I work," femalefirst.co.uk quoted the 37-year-old as saying.
Victoria, who has regained her trim waistline after giving birth to daughter Harper Seven last July , admits her pregnant tummy got in the way of her design process.
"I found it really difficult when I was pregnant and I couldn't do that. It's part of the process. I'll stand here in my knickers and start draping fabric over myself," she added.