By  on February 1, 2011

NEW YORK — Tommy Hilfiger, who built a $1.9 billion empire on preppy clothing, has enlisted the queen of prep, Lisa Birnbach, author of “The Official Preppy Handbook” and “True Prep: It’s a Whole New Old World,” for his latest endeavor.

This story first appeared in the February 1, 2011 issue of WWD. Subscribe Today.

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