This is a colorization of a shaded sketch by marauder6272:
http://www.furaffinity.net/user/marauder6272/

So about nine billion years ago, I designed a sexy alien lady and had marauder6272 draw her...and I only NOW got around to colorizing her! Here's the original design:

https://www.furaffinity.net/view/18456575/

So as I said she was initially a weird starfish looking alien which uses its antennae to read the minds of other species and then fills its body with water to streach it into the form best suited for interaction with that species. It then gets stuck that way as its physiology adapts.

It's also worth mentioning that this species reproduces asexually and does not have sex/gender. Not NORMALLY anyway. It also does not have a central culture since they're so amorphous. Their intelligence is highly dependent on what creature they choose to co-habitate with.

So here we have an innocent space star slug who happened upon a very Zapf/Exaggerated Kirk-type of Captain and finds itself morphing into an oversexed space babe who is new to the idea of sex and gender....and unfortunately for her, things don't work out.

Now she's a wandering, slightly jaded, mostly confused, space babe. Don't worry though, things will work out in the end.

EDIT: ALTERNATE STORYLINE

Alternately...this could be the result of one very lonely space cadet. Lonely guy gets a Star Slug stuck to him and it turns into this curvaceous babe wanting to "cohabit" with him. Problem is, this isn't the first time this has happened. Star Slugs turning into space blow up dolls has happened before and it has a massive stigma attached to it as many argue the actual sentience of the Star Slug. So being with a curvy Star Slug is both a sign of what a massive loser you are depending on how curvaceous they are AND seen as though you were dating an animal (a non-anthro one). Can they really THINK or are they just making the noises they think will keep them fed and protected.

The reality is that their sentience depends on their lives. They ARE just making the noises that keep them safe and fed, but that can quickly grow into actual understanding of language and the world around them.

But in general, people tend to assume the worst: That an alien slug creature turned itself into a blow up doll to leech of your gullible horny ass.

(NOTE: This is why the aforementioned captain ditched her in Story 1: He didn't wanna be caught with a busty Star Slug! It would ruin his reputation!)