KelvryWomen's Goth Lace Up Front Punk Faux Leather Bustier Corset Dress Plus Size

Is the skirt seperate from the corset or attached

Im normally a size 18 in tops..but that's if theyre looser fitting as most of my weight is around my ribs/tummy...does this have enough stretch in 18/

I am a size 12 uk but a 36g breast. it's always really hard to find things that fit without being too large on me because of my breast size. w/ size?

I am between sizes - i'm a 16 but quite wide-boned around the chest (+ c cup), but quite narrow hips. which would suit better - 14-16 or 16-18? thanks