The department store are working with the popstar on a Christmas campaign that will involve transforming the entire fifth floor of its men's store into Gaga's grotto, which will then be filled with limited edition gifts (including books, CDs, jewellery and sweets) created by Gaga and her designer friend Nicola Formichetti.
Barney's CEO Mark Lee shared his excitement around the upcoming project with WWD. He said, "Holiday is about joy, sharing and inclusiveness, and to me, Gaga really represents all of that".
Gaga's workshop will open in November until 2 January. We can't wait to see the weird and wonderful treats Gaga has in store for New York this Christmas. Take a look below for a reminder of some of her best style moments.