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COACH CLASS: Coach has enlisted its preferred army of PYT’s — Dree Hemingway, Lena Dunham, Kate Bosworth and Chloë Grace Moretz included — as inspiration for special bag designs to be auctioned for charity, benefiting the Metropolitan Museum of Art’s Costume Institute.

Forty-eight refurbished vintage bags are to be auctioned online beginning Wednesday, via Alexander Gilkes’ web site Paddle 8.

The first $50,000 of sales from the auction will be donated to the Costume Institute.

Eleven of the designs were inspired by celebrities, each of which signed a special leather hangtag affixed to their dedicated designs.

Another 26 bags are reconstructed and refurbished vintage styles, each adorned in Coach’s New York workshop.

Some 11 additional lots come with experiences included — with offers for attendance to the Coach runway show, and the opportunity to have a Coach bags named for high-rolling patrons.

The auction will close on Oct. 28 at 5 p.m.