This garment is very popular with dancers and street dance types. It's great fun, easy to make and works well with most jersey.
How to sew. Use your method of choice to finish the neckline and armholes. So that's just simply turning under and ziz-zagged or using self binding.
I gathered the skirt section using shirring elastic in my bobin and then used a zig-zag stitch to attach it to the bodice. The secret is to resist stretching this seam. It needs to stretch for getting into but you want it to sit snuggly at upper hip level.