Heidi Agan – Kate's Lookalike – Says Her Life Has Changed
05/19/2013 AT 01:00 PM EDT
But for single mother Heidi Agan, 33, that all pales compared to the extra time it gives her with children Blake, 11, and Abigail, 4.
"When I was a waitress it felt as though I never saw my children," Agan tells PEOPLE. "Now I have a lot more freedom. I am able to pick and choose when I work – and I don't miss school plays."
"To me that is the best thing about doing this," she says. "It's priceless."
Yet that doesn't mean the job is easy, either. If you want to copy the fashion and beauty moves of one of the world's most iconic women, you need to put in some serious hours.
"To try and get the legs she has got is a full time job," says Agan. "To find the polka dot Top Shop dress she wore recently to the Harry Potter studios, I had to scour the ends of the earth. But I got it in the end."