I sew the majority of my own costumes and I definitely like using poly-cotton best. I decided once to sew a cotton outfit and absolutely hated having to make sure it was ironed. Ironing ruffles can be such a pain and time consuming.
In the winter I wear my skirt, petticoat, apron, and bloomers made out of thin poly-cotton and only add long johns underneath if I'll be outside in the cold. This past summer I decided to skip the skirt and petticoat and just made a top to wear with bloomers instead. I even went to short sleeves for my summer outfit and made some thin glove extenders from some infant tights I got from the $1 store. It definitely helped keep me cooler.
So I quit wearing my beautiful cotton costume since I had to iron it and I didn't really find it any cooler than the poly-cotton. Either way I know I'll still be hot (especially when one of those hot flashes hits). Imagine, an 8-year old clown having hot flashes! That's when my balloon pump doubles as a fan.
