I like to thing these two are related in a way - perhaps sisters or mother and daughter. But, as far as I can tell, there's nothing that points to that on the artist's page. Cute, in any case.

Notice the rings on their fingers. They could be a married couple.

The fact that they look so much the same I call incest!

That pose is so beautiful. As well as the ladies, if only they had more plumpness, tho...