Plus size Halloween costumes: start with the measurements
Most costume advice starts with a picture. This page starts with a tape measure, because on a spreadsheet catalogue the photo is the least reliable thing you can buy from.
Listed prices below are what the partner catalogue shows, converted at CNY 7.15 per $1 and checked 2026-10-24. They exclude the agent fee and international shipping — the Deals page shows that maths in full.
The one rule
Buy the shape, not the label.
A listing that says "plus size" tells you nothing about whether it will fit you. A listing with a flat-lay measurement table tells you everything. Every recommendation below is a piece with a forgiving cut and a size run wide enough to actually reach the measurements.
What to measure before you order
Measurement
Where to take it
Why it decides the fit
Chest / bust
Around the fullest point, tape level
The number the size chart is built on. Add 6–8 cm for a layer.
Shoulder
Seam to seam across the back
The first place a coat looks wrong. Too narrow cannot be fixed.
Sleeve
Shoulder seam to wrist, arm slightly bent
Short sleeves make a coat look borrowed; long ones swallow the hands.
Length
High point of shoulder to hem
Decides whether it reads as a coat or a tunic — both are useful, differently.
Hip
Around the widest point, feet together
Only matters for the puffer and the dress-shaped pieces.
Measure a jacket you already own and like, flat on a table, then compare that to the listing's flat measurements. It is faster and more accurate than measuring your body.
Three outerwear routes
36 styles
The oversized witch coat
An oversized wool coat is the most forgiving silhouette in the catalogue: the shoulder is dropped, the body is straight, and it layers over a jumper without pulling. Listed at CNY 456.
A canvas chore coat is the workwear route: boxy, unlined, easy to wear open. It reads as a costume only when you style it — otherwise it is just a good jacket.
The puffer is the only piece here that is genuinely warm, which matters if you are outside after 9 pm. Size up one step if you want to layer a hoodie underneath.
They are unisex outerwear listings with a wide size run, not "plus size" labels. That matters: the fit comes from the size chart, not from a category badge, so always measure a garment you already own and compare it to the chart.
What is the safest plus size Halloween costume?
Outerwear. A coat or a puffer covers the silhouette you already have, layers over anything, and is the least likely piece to arrive too small — as long as you check the shoulder and sleeve measurements.
How much ease should I add over my measurements?
For a Halloween layer over clothes, add 6–8 cm to the chest measurement of the garment compared with your body. Less than that and you cannot wear anything underneath; more and the silhouette disappears.