I think it's a 12 Star Plan outfit from 1956.
https://www.worthpoint.com/worthopedia/vintage-vogue-doll-ginny-outfits-1801015405
https://www.worthpoint.com/worthopedia/tagged-1956-twelve-star-plan-vogue-982908479
Pretty sure she's a Rosella Air Hostess doll - Miss England. 3rd from
the right in the 1st link, closeup in the last link.
https://www.pinterest.com/pin/58124651419357826/
https://www.pinterest.com/pin/471822498442785224/
https://www.pinterest.com/pi...