From the Friday, March 22, 1963 Northern Virginia SUN.

The caption reads:

THE SHOE FITS -- Prince Charming portrayed by Robert Felts finds his true love as he places the glass slipper on the foot of Cinderella played by Deborah Habel. The disgruntled trio in the background are the mother, Frances Alexander (left), second sister Martha Clark, and first sister Lyn Larsen, standing. The play was written by the children of Mrs. Polly Wrinkle's second grade at Madison Elementary School, Arlington. They also made the set and props for Wednesday's performance for mothers and the primary grades. (SUN Photo - Bill LIttle.)

My mother made my costume, including the hat. If memory serves, the jacket and hat were brown. I also remember that Martha had an English Springer Spaniel named Humphrey.