How do you make your own girl's evacuee costume?

To make a girl's evacuee costume, start with a simple, vintage-style dress or skirt and blouse, preferably in muted colors or patterns. Add a woolen cardigan or a warm coat for authenticity. Accessorize with a small suitcase or a cloth bag, and include a headscarf or bonnet to complete the look. Finally, consider adding a few period-appropriate details, like a toy gas mask or a book, to enhance the costume.