Dia Promo Codes & Coupons November 2026

As of November 2026, we list 11 verified Dia offers — each one AI-tested and confirmed by real shoppers before it goes live. Popular ways to save: Dia Style Box, plus size dresses, plus size jeans. Expired offers are removed daily, so every code below should work today.

Dia offers 0 coupon codes and 11 deals as of November 2026. Today's top offer: Birthday Reward: Special Discount Applied. Codes are verified and updated daily.

🔥 Top Dia Discount Codes for November 4, 2026

30%

OFF

Birthday Reward: Special Discount Applied

Receive a special discount or offer during your birthday month. This personalized reward is sent to eligible members.

$25

Only

Refer a Friend & Get $25 Credit

Refer a new customer to Dia & Co and receive a $25 credit when they make a purchase. Your friend also gets a discount.

Free Shipping

Free Shipping on Orders Over $75

All orders exceeding $75 qualify for complimentary standard shipping. No additional charges for delivery within the US.

15%

OFF

Reactivate Your Account: 15% Off

Customers reactivating their inactive accounts can receive 15% off their next order. This encourages returning shoppers.

20%

OFF

Holiday Promo: 20% Off Plus Size Jumpsuits

Enjoy 20% off on all plus size jumpsuits during this holiday promotional period. This offer is valid sitewide.

Bundle

Bundle & Save on Plus Size Essentials

Purchase multiple eligible plus size essential items together and receive a discount. Specific bundles are pre-selected for savings.

Up to

25%

OFF

Prime Day Deals: Up to 25% Off Sitewide

During the Prime Day event, get up to 25% off almost everything on the site. This is a limited-time seasonal promotion.

From $35

Plus Size Activewear From $35

Shop a selection of plus size activewear styles starting at $35. Find leggings, tops, and more for your workouts.

15%

OFF

First Dia Style Box Styling Fee Waived

New customers can get their initial Dia Style Box styling fee waived. The $20 fee is removed for your first curated box.

15%

OFF

15% Off Your First Dia Style Box

Discover your perfect fit! Receive 15% off your first Dia Style Box order.

20%

OFF

New Customer Offer: 20% Off Plus Size Coasts

First-time shoppers can receive 20% off plus size coats. This discount applies to a wide selection of outerwear.

Customer Reviews

4.0

Average Rating

Total Reviews

Cody Lindqvist

★★★★☆

4 months ago

Good deal on a great dress

I was looking for a wedding guest dress and found a plus size cocktail dress during their seasonal clearance. The price was great, especially with the extra percentage off. Felt like good value for what I paid. Shipping took 6 days to get to me, which was fine.

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Renee

★★★☆☆

4 months ago

Jeans were okay, service was good

I ordered some plus size skinny jeans last week. They got here in like 4 or 5 days, which was pretty quick. The jeans themselves were alright, not my favorite fit but not bad either. I usually have trouble finding jeans that fit right so it wasn't a huge surprise. The website was easy to use, and checkout was smooth. No complaints there. I might try a different style next time.

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Cleo

★★★★★

5 months ago

Loved my Dia Style Box!

I got my first Dia Style Box and it was awesome! My stylist really got my vibe. Everything fit perfectly, which is usually a challenge for me. I kept four items and only paid the styling fee for the box, which basically covered part of my purchase. I will definitely be ordering again and have already told my sister about it!

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Dia Community Discussion

Share tips, ask questions & help fellow shoppers save more

Megan

4 months ago

Anyone know if you can use more than one coupon code on Dia? Like if I have a new customer discount and then also wanna use a free shipping code or something.

D Dana Patel 4 months ago

I tried stacking a newsletter sign-up code with another promo once for a direct purchase, and it didn't work. I think it's usually one coupon per order, at least that's how it's been for me.

O Omar Kim 4 months ago

Afaik, you can't stack them. They usually only let you use one at checkout. The styling fee sort of acts like a credit though, so that's different than a typical coupon.

6 Responses (2)

Sophie Romero

4 months ago

Hey, thinking about trying Dia but I'm worried about sizing. I'm usually a 20/22, sometimes a 2X. Does their stuff run true to size or should I size up/down?

G Greg J. 4 months ago

From my experience with their dresses and jeans, it's pretty spot on for plus sizes, like they actually get it. I usually wear a 16 and their 16s fit me well. I'd say stick to your usual size.

A Alex Okafor 4 months ago

Yeah, I agree with the other commenter, they carry sizes 10-32 so their sizing is specifically for that range, not just vanity sizing. I've found it to be consistent with what I'd expect.

2 Responses (2)

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