BTW, the Trans-Texas "Cowgirl" uniform that TxAg referred to is depicted on this page:
Well, alrighty then. Here ya go!
Here's a couple of postcards showing Braniff's uniforms of the 1960's.
In the first one, the hostess on the far left is wearing the space helmet that Braniff Place referred to.
The second postcard is an advertisement for the "Air Strip"
The website that hosts these postcards has about 80 different postcards of various Braniff aircraft from the 1930's through the 1970's, including some hard-to-find shots of the exterior of Amon Carter Field, later renamed Greater Southwest International Airport.
Here is the main page for the site: