I actually linked to this long ad-history post already, but can’t resist highlighting this photo of Braniff uniforms.
"Every plane was painted different colours, and all the stewardesses wore uniforms designed by Emilio Pucci. Pucci’s uniforms were deliberately designed with lots of separate individual components that could be worn in all sorts of combinations. It meant that each stewardess (and pilot) was an individual, not a corporate conformist."
Also in the same section of the post is a short video of an interview with Mary Wells that includes a Braniff TV spot from the time.
BBC - Adam Curtis Blog: MADISON AVENUE