This is a giveaway promotional pattern from J.C. Penney department stores that tied in with the 1950 release of Walt Disney's Cinderella film. It's in decent condition considering it's age, even though it is foxed and wrinkled. I'm happy to say it is unused.
I am dating it to precisely 1950 because the Advance dress pattern mentioned at the bottom of this page (Advance 5406) dates to the 1940s, and Cinderella was first released in 1950:
The caption above reads: "Trust a Parisian to know style! Both Jaq (at right), who's French, and Gus-Gus (left), who's strictly Disneyland, appreciate the chic of those Sorority rayon prints at a thrift 98 cents a yard. The dress Cinderella's wearing with her dress-up apron here is Advance Pattern 5406."
Of course this giveaway pattern was intended to promote Penney's fabric department. I wish I could buy rayon prints for $.69 a yard today:
It is magical, as our Fairy Godmother tells us below! The apron can tie and the back, front or side, and as you can see the fabric choices are limitless and it can be trimmed in various ways. I think I will have to sew this one for myself; it's just too cute!