What sizes should I carry for a plus size boutique?

At minimum 1X, 2X, 3X (or 14, 16, 18, 20, 22). Adding 4X and 5X expands your customer base dramatically and is still under-served. Avoid only running up to XL and calling it 'curvy' — that's the most common complaint plus customers have.

Is plus size wholesale more expensive than straight size?

Sometimes 10–20% higher per piece (more fabric), but the markup math still works at 2.5x. Customers in this niche typically pay full price more often, which offsets the slightly higher wholesale cost.

Do I need a separate plus size boutique or can I add to my straight size store?

Both work, but a dedicated plus size boutique almost always wins on customer loyalty. If you're adding to an existing store, give plus its own collection page, its own photography, and its own model — not a 'plus size also available' afterthought.

Plus Size Wholesale Clothing for Boutiques: The 2026 Vendor Guide

Plus size is the most underserved niche in boutique wholesale, and one of the highest-margin opportunities I see in 2026. The customer is loyal, the demand is real, and most boutiques are still trying to "extend their straight size run" instead of building a true plus size collection.

I'm Carina, boutique owner since 2013 and Shopify Partner. Below is the honest map of plus size wholesale sourcing — where to buy, what sizing actually means in this category, and the pitfalls that kill new plus size boutiques.

Some links below are affiliate links — I may earn a commission if you purchase, at no extra cost to you. See full disclosure.

1. Why plus size is the niche to consider

Demand exceeds supply. Roughly 67% of American women wear size 14+. Most boutiques carry only XS–L.
Customer loyalty is unusually high. When a plus size customer finds a boutique that consistently fits her, she stays for years.
AOV runs higher. Plus size customers buy in sets and stock up when fit is right.
Return rate is lower — but only if your sizing is honest. Vague sizing destroys this.

2. The plus size categories that sell

Dresses (especially midi and maxi) — top performer; she can wear it to work, church, dinner
Tops with sleeves — long sleeve, 3/4 sleeve, flutter sleeve all outperform tanks
Stretch denim and wide-leg pants — fit-focused; reorder rate is huge when right
Layering pieces — kimonos, cardigans, vests; forgiving and adds basket size
Modest plus size — the niche-within-a-niche; almost zero competition
Plus size workwear — scrubs, professional dresses, blazers; huge unmet demand

3. Where to actually source plus size wholesale

FashionGo

Deepest plus size catalog in U.S. wholesale. Use the "Plus Size" category filter (don't search "plus" — you'll miss half the vendors). Sizing typically runs 1X–3X, occasionally to 5X. Many LA-based vendors here specialize exclusively in plus. Dynamic net terms unlock with history. Start with FashionGo if you're new — this is where most plus size boutique owners I coach buy 70%+ of their inventory.

Faire

Smaller plus size selection than FashionGo, but stronger on independent brands and elevated basics. Net 60 terms and free returns on first orders make it low-risk to test new brands.

OrangeShine

Listed for completeness — they carry some plus size. I personally don't recommend them, so I'd start with the two above.

Specialty plus size wholesalers

Several brands sell direct (skip the marketplace) — typically higher minimums ($500–$1,500) but better margins. Search "[brand name] wholesale" once you find brands selling well for you on FashionGo, and email them directly.

4. The sizing reality (this is the part no one explains)

Plus size wholesale sizing is wildly inconsistent. A "1X" from one vendor fits like a "2X" from another. You have three options:

Order a sample before committing to a new vendor — try it on yourself or a fit model.
Publish honest, measurement-based size charts per product, not "see size chart" generic links.
Stick to 2–3 vendors you trust rather than spraying across 12. Consistency builds the loyal customer base.

The single biggest plus size boutique mistake I see: copying a vendor's stock size chart and assuming the customer will figure it out. She won't. She'll return it once and never come back.

5. Plus size product photography that converts

Stock photos from the vendor showing a straight-size model "draped" in a 2X piece will tank your conversion rate. The fix:

Use real plus size models (paid or customer features) wearing the actual size you'd sell
Show the back of dresses and tops — fit issues hide in the back
List the model's exact size and height in the product description
Show the garment on a hanger or flat lay alongside the on-body shot

This isn't optional. It's the #1 differentiator between plus size boutiques that grow and ones that stall.

6. What to expect on minimums and pricing

FashionGo: Most plus vendors have $100–$250 minimums. Per-piece wholesale typically $8–$28 depending on category.
Faire: $100–$300 minimums, net 60, free returns first order.
Direct from brand: $500–$1,500 minimums, net 30 after vetting. Better margins.
Markup target: 2.5x–3x landed cost minimum. Plus size customers will pay full price for the right fit; don't underprice.

7. Red flags to avoid

"Plus size" lines that only go to size 14. Real plus starts at 14/16 and runs through 3X minimum.
Vendors who won't share measurements. If they only show "S/M/L/XL," skip — sizing inconsistency will eat your margins.
Stretchy fabrics labeled "one size fits all." They don't. Returns will prove it.
Vendors with only straight size photos for plus products. They don't care about this customer, and it'll show.

Your next step

Open a FashionGo account, filter the "Plus Size" category, and bookmark 15 vendors. Place a small first order ($100–$200) with one vendor in your strongest category — dresses or tops — before you build out further.

For the broader wholesale marketplace comparison, see my Faire vs FashionGo vs OrangeShine guide. And for my full vetted vendor list (the ones I personally buy from), the Little Black Book is exactly that.

Plus size customers don't need flashier marketing. They need consistent fit, honest sizing, and a boutique that actually shows them in the clothes.

— Carina