Hi all, I need a little clarification here. Anyone can help?

Next year me, my fiance and my friends want to go to Sipadan-Mabul-Kipalai and we all take the diving package also.
But the issue here is that we all Muslims and my fiance ask me whether the diving suit will show the shape of her body. Because there are mix of males and females among us. She a little bit embarrass.

Is the suit really fitting the body or there are any special suit for tudung girl?