This is the second time in only two months that Perth-based Mathers has starred as the credited fashion designer to White.
"That's a total five-hour showcase of my fashion on prime time US television before a nightly audience of up to 16 million Americans – 160 million viewers in all.
"I had a great reaction to my first broadcast in September. My email was bombarded with retailers wanting to open accounts and girls wanting to know where they could buy the dresses," Mathers said.
"The people at Sony Pictures in LA (the WoF producer) told me it was really unusual for a designer to be called back so quickly for a second run - I'm very flattered."
The Australian fashionista continues to expand in the US and is closing quickly on 200 stockists in a little more than a year. "My US team is confident we will reach 500 by this time next year," she said.
Mathers has also been credited with leading a revival of the "high-low", a style where the dress is cut high at the front and long at the back.
Her showgirl-inspired Cassie gown was a best seller in the U.S. last season and stars seen wearing high-low cuts include Christine Aguilera, Jessica Alba, Victoria Beckham and January Jones.
"It's back again this season in fresh colours and I've developed new styles," she said.
USA:Baltimore Fashion Week 2011 – ‘The Mystique of Fashion’
