This is the Ben Cooper version released in 1976, as seen below. A new version was released in 1979 with the release of Star Trek: The Motion Picture. Is that supposed to be Jeannie on the right?
The first Ben Cooper Spock costume was released in 1973 (first two photos below). The first Spock costume was produced by Collegeville in 1967 (third photo below).
(Images via Allison Marchant/Flickr, Star Trek: Vulcanology, eBay, and Jeff Andrews/Pinterest)
2 Warps to Neptune 
Yep, that’s supposed to be Jeannie: http://dougsploitation.blogspot.com/2009/10/tragic-halloween-costumes-megapost.html
Thank you. With red hair? Looks more like Esmerelda in Jeannie’s clothes.