http://screenrant.com/star-trek-steamiest-aliens/

Star Trek is known for boldly going for where no one has gone before. These stunning aliens make that journey worth it.

I guess you're not one for much list making, are you? I know anyone can have preferences over which ones they like the best. Founders, the Borg, 8472, and the insect Xindi are four of mine. The third one on that little listed could easily be referring to a date, August 4, 1972.
Take care and God bless

They were all beautiful. They mentioned Deana having 4 breasts. No. Two were just fine.

However many Deanna had, I didn't like that character because of her tendency to freak out for no reason like when she looked in a mirror in the episode with the Paxans and was crying that it wasn't her.
Take care and God bless