Prada’s boutique brand Miu Miu is taking over the former Jil Sander space on East 57th Street, The Post has learned.

Prada, which sold the Jil Sander label to Change Capital Partners in 2006, restructured the 25-year lease it had at 11-13 E. 57th St., and now plans on using the space to pump up its Miu Miu line.

“It’s a big coup for 57th Street,” said Brian Schwagerl, vice president for real estate at Hearst Corp., the publishing company that owns the building.

Miu Miu, which has stores in SoHo and on Madison Avenue, is the brainchild and nickname of Miuccia Prada – granddaughter of Prada founder Mario Prada.