Thea Long Sleeve Slit Dress: Elegant Modern Evening Style
Thea Long Sleeve Slit Dress: Elegant Modern Evening Style
Thea Long Sleeve Slit Dress: Elegant Modern Evening Style
Thea Long Sleeve Slit Dress: Elegant Modern Evening Style
4.9 based on 4,800+ reviews

Thea Long Sleeve Slit Dress: Elegant Modern Evening Style

£84.95 £24.95 Save 71%
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Designed for curvy women, by women who understand.
Free UK Delivery with Royal Mail
14-Day Money-Back Guarantee
Colour
Size
Low stock — selling fast
Fit
Runs Small True to Size Runs Large
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LIMITED STOCK NOTICE

At Curveline | Middlesbrough, many of our pieces are produced in limited quantities and popular sizes often sell out first. Due to increased demand, stock is currently moving quickly. If you can still click “Add to Bag”, your size is still available.

— Curveline | Middlesbrough Team 🤍

Free UK Delivery
14-day Money-Back Guarantee

Effortless elegance in every stitch.

The Thea long sleeve slit dress is designed for women who appreciate a sleek, modern silhouette with a touch of allure. Its clean design and subtle slit detail create a refined yet confident look, perfect for both casual elegance and evening occasions.

Elegant slit detail

The tasteful side slit adds movement and sophistication, giving the dress a graceful and subtly alluring finish.

Smooth polyester fabric

Crafted from high-quality polyester fiber, offering a comfortable feel with a polished, smooth appearance that holds its shape well.

Flattering long sleeve design

Full-length sleeves provide balanced coverage while maintaining a chic and streamlined silhouette.

Lightweight and versatile fit

With a comfortable blend structure, this dress is ideal for various occasions—from daily wear to evening outings.

Elevate your wardrobe with the Thea slit dress and enjoy a perfect combination of elegance, simplicity, and modern confidence.

If for any reason you are not happy with your order, simply send it back within 14 days for a full refund. Shopping with Curveline | Middlesbrough is worry-free. See our Refund Policy for details.

Free UK delivery on all orders, fully insured with tracking. Orders are processed within 1–2 business days and typically arrive within 7–11 business days after processing.

Sarah M. and 10,000+ other women love Curveline | Middlesbrough ✓

Curveline | Middlesbrough started with a simple belief. 🤍

Every woman deserves beautiful clothing in her size.

As a brand created for curvy women, we were tired of seeing beautiful styles that did not include every size. So we created a place where women never have to wonder whether their size exists.

What started as a simple idea quickly became something much bigger than we ever imagined.

Because of women like you. ✨

Your support, your orders and your belief in what we are building have helped Curveline | Middlesbrough grow into something truly special.

And now, we are moving into a bigger home. 🤍

To celebrate this exciting new chapter, enjoy up to 70% off sitewide while stocks last.

— The Curveline | Middlesbrough Team 🤍

What Our Curveline | Middlesbrough Customers Say

Loved by thousands of women who finally found their fit

4.9
Based on 4,800+ reviews
Marlowe R.

Marlowe R.

Just arrived and the fabric is so much nicer than I expected — soft with a lovely weight. The twist-front and little black trim look so expensive. The beige goes with everything.

✓ Verified buyer
2026-05-12
Sienna T.

Sienna T.

The twist front is SO flattering over my tummy — I felt put-together the second I had it on. Wore it to lunch and got three compliments. True to size on my 2XL.

✓ Verified buyer
2026-05-18
Delphine A.

Delphine A.

This maxi is a dream — flowy, breezy, and it has POCKETS. So comfortable I've basically lived in it all summer. Sized up one and the fit is perfect.

✓ Verified buyer
2026-05-22
Cora B.

Cora B.

Obsessed with this colour and the little knot detail — the piping makes it look high-end, not cheap at all. The material feels gorgeous on.

✓ Verified buyer
2026-05-25
Hazel M.

Hazel M.

Bought the powder blue for a wedding and felt like an absolute goddess. The halter neckline is so flattering and it skims everything. Cannot recommend enough.

✓ Verified buyer
2026-05-28
Priya N.

Priya N.

The black maxi is the comfiest thing I own — looks dressy but feels like pyjamas. Pockets, flowy, true to size. Already ordered it in another colour.

✓ Verified buyer
2026-05-30
Renata G.

Renata G.

This wrap dress hugs in all the right places and the white piping is so chic. Finally a dress that fits my curves AND my height. Worth every penny.

✓ Verified buyer
2026-06-01

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FAQs

Yes — all UK orders include free delivery, fully insured and with tracking.

Our pieces are designed for L–6XL and run true to size. If you are between sizes, we recommend sizing up for a more relaxed fit.

Orders are processed within 1–2 business days and typically arrive within 7–11 business days after processing.

We will email you a tracking link as soon as your order has been dispatched.

Email our support team at support@curvelinemiddlesbrough.com and we will be happy to help.

Curveline | Middlesbrough is designed exclusively for plus sizes — L through 6XL.