I'm surprised she can even move. Her boobs are individually bigger than her head, and if she were wearing that dress in real life they'd be hanging out like snot bubbles from a brat's nose.
There are people in real life who are that busty (in very rare cases even without augmentation) and they can still move. Requires a lot of exercise, but hey, sorceress probably gets it from all the combat she does.
Though it is completely true that there's absolutely no way she could bounce up and down the way she does and have that dress stay on. She must be using some of her magic to adhere it to her skin.
http://terosclassicgaming.blogspot.com/ - Watch me beat "SNES Aladdin" http://www.backloggery.com/tero - My backloggery
99% of the time Japan devs in their own country are proud to show off boobs on a front cover. Don't you think it's ODD she's the only one with her back towards the cover? In every pic of the Sorceress we see a side boob. Here we see NOTHING. This happened after western media started complaining about sexism.
Don't be surprised if her boobs are reduced in the western version.