Something like this would be more accurate even though it won't have the purple

https://www.amazon.com/gp/aw/d/B013I91VGQ/ref=mp_s_a_1_10?ie=UTF8&qid=1516727608&sr=8-10&pi=AC_SX236_SY340_QL65&keywords=black+lolita+dress&dpPl=1&dpID=41zNCMaQ96L&ref=plSrch

It's going to have a more similar shape, if you wanted the purple you can always cut this skirt, use hem tape on the edges and wear a purple skirt underneath?

Also a petticoat is your best bet to give you the poof!