Isaac Mizrahi Quitting as Target Designer

For five years, the New York fashion designer has been selling a relatively low-priced collection - dresses for less than $60 - exclusively at Target, bringing chic fashions and his name to a whole new audience.

Now, after an extraordinary run, the designer is leaving.

He has taken a job as chief creative director of Liz Claiborne.

The fall collection in stores now is his last.

"I'm bummed," said Anna Craprotta, 36, an attorney who says she's a fan of the Isaac Mizrahi for Target collection because it's wearable and priced well.

Other mass retailers, keen to capture some of the success Target has had, are signing big designer deals.