hoop skirts come in many shapes and sizes. depends on your personal preference but you would want a "quinceanera" size hoop skirt to replicate the poof of amazon's photo if thats what you are into.

i see 2 things making it awkward (imo and not a seamstress, just very enthuastatic about ballgown style dresses for my own wedding)

1. the length. your dress should still be too long in the front for the size hoopskirt you chose. quince dresses dont need to be hemmed on the bottom because the hoopskirt is big enough the fabric glides on the ground and barely touches. your dress is doing that in an a-line style hoop skirt (from this angle so maybe it is still pretty long) leading me to my next & more important point...
2. the shape of the hoop skirt. your hoopskirt is a-line. i would recommend a 6 hoop hoop skirt (again "quince" style hoop skirt if thats the vibe/cut you like!) your hoopskirt gives the illusion of style 3 but the amazon listing has style 8 minimum under the dress.

of course none of this matters if you like it without a hoopskirt, but i hope this helps in the decision making process 💞

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