I am 5'8 tall and weigh 160 Lbs. I wear a size 10 in "regular clothes", sometimes an 8.
I bought the Size Large Costume and it was perfect for my height and "larger" body.
The red sash covers the middle so you can set it up in whatever way you feel best. I bought some Ninja Sais and tucked those into the red sash and I looked very authentic!
The costume material is actually good quality. It did not rip, tear or lose its shape. The black provides a slimming effects and holds in those loose ends. I get nervous about " catsuits" but this one made me feel confident and secure.
I wore for a party and it was the best. I did not worry about feeling fat all night or pulling and tugging at straps or a short skirt. Even so, I still received lots of positive feedback from my costume. I am actually going to just handwash it and wear it again for another party coming up.
Have a decent undergarment for the bust. The cleavage is cut low so be prepared to work with it if you have to wear a bra .My bra kept showing all night but that was my fault for not having the right bra. I will not make that mistake on this next party.
Also, other buyers mention the straps on the arms and legs coming off and falling down all night. I did not have this issue. On the pants I actually took red thread and sewed the straps directly onto the leg. I just wrapped the straps up the leg firmly like the photo and then held them in place and sewed it on at random points. All night long, the straps stayed perfectly in place. For the arms, I did the same and on one I just wrapped it up the arm and then put a safety pin at the top. Worked like a charm. The straps stayed in place even with my dancing around and being crazy and acrobatic. You can do the same for the sash, so the sash doesn't keep spinning and moving around. If you follow those steps you should not any issue with the arm or leg straps falling and the material does not get "ruined" by putting pins in it or sewing onto it so sew away. Its pretty resilient.