I'm a member at Nadine's site, so I've seen the half set released so far.
Miosotis has put on a few pounds, since her days as Melina, all across her body. As a result, she does seem (to me) to be bigger up top, and her face has changed slightly.
Depending on her age, she may also have matured just as a matter of elapsed time. Nadine, for example, had a distinctly different look when she first came on the scene (at age 18, as I recall)-- which was all well and good, but I liked Nadine even more, once she got an extra year or so tallied up. Of course, that involved tacking on a few pounds, too.
Ah, the joys of nature. Indeed, I love nature.
Bold Dude