The Medium/Large size fits me well - I am an adult, size 13 in pants and a 36C bust - could certainly fit another size up or two for the bust, but not too much bigger in the hips, (although it is pretty stretchy). The collar is a bit more "Spaceman" than Egyptian (as you can see in the photo). The arm 'snake' is just a piece of cloth covered wire - I had to glue one of the snake eyes back on and had to add a red ribbon to make the exposed wire end look more like a tongue. The headpiece is really for a kids-sized head - it fits, but the hair combs at the rear of the headband don't stretch behind my ears. Not sure how it will stay on if I tried to do more than just stand around. Very fast overseas shipping and very well presented product with free gift from the merchant, Zuma6 / foreplaycatalogueThis is gorgeously made and comfortable. It is stretchy in all areas and comes with everything but shoes. I bought this to alter for the base of a larger costume so in sewing on it I am surprised by the quality. The only thing that needed work was the snake on the headpiece which has a terrible paint job on the eyes but gold spray paint blended well with the rest of the headband (just cover the tassles if you paint it). Very glad I found it for this price.i love this costume so much no complaints... a few things to keep in mind tho, the previous person said they were a size 13 and it fit. i have no idea how that is possible, i am a size 7 got a large and it fit perfect. while i walked and danced tho the skirt came up so i had to wear shorts under which is no problem with me... im also a B cup and the bra fit perfect i cant see it fitting bigger the a C cup... regardless ill recommend this costume over and over agin...Perfect choice. Complete, it was mora than I expected, comes in a great bag to storage properly. I strongly recommend to buy it!