USD21.03
BIN-SECTION L-BOX 81 https://mediahub.boohoo.com/bqq21932_blue_xl?qlt=70&w=549&ssz=true&dpr=1 Size:Regular 2 (XS) Available in Burgundy Red According to What Kate Wore, the duchess actually had the zipper of the dress changed into a full-length version and the slit in the back closed A Line Royal Blue Two Piece Long Sleeve Lace Top Prom Dresses – Demodresses
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USD24.70
USD28.10
Pairing a skirt with a knit can create a comfortable seasonal outfit, with the knit's thickness chosen for the temperature. Check that the waistband has room for any layers you intend to tuck in.
Ask whether replacing elastic would alter the intended waist fit. Consider whether repeated twisting needs a construction repair instead.
Look for the skirt shown at rest so you can distinguish the actual hem from movement in a photograph. Ask about alteration feasibility before buying if you expect to change the length.