xpost r/crafts; 4 y/o asks to be Rainbow Dash for halloween. Cuteness ensues. - Imgur
megan nielsen design diary: the rainbow dash costume. My kid loves My Little Pony and this is her fave character. I bet she would gladly add this to the dress-up bin.
88 of the Best DIY No-Sew Tutu Costumes - DIY for Life My Little Pony