Mary-Kate Olsen Presenting Pop-Up Shop at Music to Know

Mary-Kate Olsen arrives at a building on Tuesday (July 5) in New York City.

The 25-year-old fashion designer and twin sis Ashley will have their own pop-up shop at this summer’s Music to Know festival in East Hampton, New York.

“Smaller, more intimate festivals like this one reach a more specific customer,” Mary-Kate told the N.Y. Times.

Some of the items that will be featured in the pop-up include canvas bags and graphic T-shirts from their Elizabeth and James line as well as their latest business venture, StyleMint!

10+ pictures inside of Mary-Kate Olsen in New York City…