Her family posts videos on Instagram of the great-grandmother tap dancing, shimmying, doing the floss dance and otherwise ... she told TODAY's Al Roker in an interview that aired on April 4.

Artistic Director Nate Jacobs and dancer Lamont Brown have been developing the original musical built around tap for several years.

By Ashley Iasimone Remember Hilary Duff‘s 2007 performance for the Today show’s summer concert series ... Trending on Billboard Duff’s understated dance moves to her song “With Love ...