TL;DR
Plan an adult assortment with real measurements rather than size labels, balance evergreen themes with a small test buy, and state clearly what each style does and does not include.
Read real measurements, not size labels
Adult sizes are not consistent between suppliers, so plan with numbers. Ask for flat measurements for each style and compare them with the sizes you already sell. Halloween costumes for women and Halloween costumes for adults often carry the same size label but differ in fit, so note the recommended body range instead of relying on the letter alone. When you review wholesale Halloween costumes for sale from several suppliers, a short measurement table per style makes decisions faster and reduces returns. Where a range offers several fits, note which one you are buying so a reorder does not switch silhouette.
Balance evergreen themes with a small test buy
Most assortments mix familiar themes such as classic creatures and storybook characters with a few seasonal looks. Keep the evergreen group stable, and test new designs in a small quantity before committing to a deeper buy. Because minimum order quantities are confirmed per project, discuss a small first run with your supplier and decide in advance what result would justify a reorder. Writing that threshold down keeps the decision factual rather than emotional. A test buy also gives you real information about packing and display that is hard to judge from a catalogue photograph.
List what is included and what is not
Two styles can look similar in a photo yet differ in what ships. In a range of wholesale Halloween outfits, one style may include a hat or wings while another ships the garment alone, so record the main pieces, the accessories and anything shown in an image but sold separately. For Halloween party store costumes, an included and excluded list on the shelf tag or product page prevents a common complaint at the till.
One style, one story, in store and online
The same product needs consistent information wherever it appears. Use the same item number, the same measurements and the same included and excluded list in your shop and in your online listing. If a photo shows an accessory that is not part of the set, say so in both places. Consistency reduces returns and makes reordering straightforward, because staff and customers read the same record. If a supplier updates a measurement or an included item, refresh both the shelf record and the online listing at the same time.
Plan SKUs, size packing and reorders
Decide how each style is packed: single sizes or a size assortment per carton, and how that maps to your SKU structure. Size packing affects shelf space and stock counts, so agree it before the order is confirmed. When a style performs well, base a reorder on your own stock and sell-through rather than on a general claim, and check that the packing and lead time still fit your calendar. It also helps to agree how each carton is labelled, so stock can be received and counted without opening every box.
Illustrative assortment planning record (example only)
The lines below are an illustrative example of how a planning record can look. They are not sales data, rankings or a forecast.
- Style: adult costume, evergreen theme, two colourways
- Size range: adult S to XL, one size per carton for the test run
- Included: main garment and one accessory; the hat is sold separately
- Test quantity: a small first run, reordered only if it meets your own target
- Channels: the same item number and measurements on the shelf tag and product page