Sequin Strapless Long Mermaid Prom Dress
Sequin Strapless Long Mermaid Prom Dress
Currently 25 items are in stock!
Order in & Get Delivery By .
Couldn't load pickup availability
This Sequin Strapless Long Mermaid Prom Dress is the perfect combination of elegance and modernity. Crafted from the finest blue sequin fabric and designed with a flattering mermaid silhouette, this dress is sure to make an unforgettable statement at any special occasion. A strapless body creates an ultra-slimming effect, while the long length offers a sense of timeless sophistication.
SHIPPING INFORMATION
SHIPPING INFORMATION
🚚 Total Delivery Time = Processing + Shipping time.
Processing Time: 48-72 Hours (2-3 business days).
Delivery to the UK:
- Standard Shipping: 4-9 business days.
- Expedited Shipping: 4-7 business days.
If time is of the essence, please consider selecting expedited delivery for faster service.
RETURNS & REFUNDS
RETURNS & REFUNDS
- We offer a 30-day return/exchange service after receiving.
- Custom size and final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at contact@prettyunik.co.uk
- Please click here for more details: Return & Refunds Policy







Buy 3 Get , Get one Free
Shop Now, Pay Later with Klarna at Checkout
Buy 3 Get , Get one Free
Shop Now, Pay Later with Klarna at Checkout
Buy 3 Get , Get one Free
Shop Now, Pay Later with Klarna at Checkout
Buy 3 Get , Get one Free
Shop Now, Pay Later with Klarna at Checkout
Buy 3 Get , Get one Free
Shop Now, Pay Later with Klarna at Checkout
Buy 3 Get , Get one Free
Shop Now, Pay Later with Klarna at Checkout
Buy 3 Get , Get one Free
Shop Now, Pay Later with Klarna at Checkout
Buy 3 Get , Get one Free
Shop Now, Pay Later with Klarna at Checkout
Buy 3 Get , Get one Free
Shop Now, Pay Later with Klarna at Checkout
Our Best Sellers
-
Pink V-Neck Long Sleeves Printed Maxi Dress
4.833333333 / 5.0
(6) 6 total reviews
Regular price £23.38Regular priceUnit price / per£46.75Sale price £23.38backlessCLOTHINGCustom SizeDRESSESEVENING DRESSEVENING DRESSESFormal Evening DressLong Evening DressLong PromMERMAID PROM DRESSMermaid Prom DressesNEW ARRIVALNEW DESIGNPARTY DRESSPARTY DRESSESPROM DRESSPROM DRESSESprom sleevelessprom straplessSEQUINStraplessTRENDINGTRENDSWedding & EventsSave [$] -
- Save £35.01
White Deep V Neck Sleeveless Knit Dress
1.0 / 5.0
(0) 0 total reviews
Regular price £29.99Regular priceUnit price / per£65.00Sale price £29.99backlessCLOTHINGCustom SizeDRESSESEVENING DRESSEVENING DRESSESFormal Evening DressLong Evening DressLong PromMERMAID PROM DRESSMermaid Prom DressesNEW ARRIVALNEW DESIGNPARTY DRESSPARTY DRESSESPROM DRESSPROM DRESSESprom sleevelessprom straplessSEQUINStraplessTRENDINGTRENDSWedding & EventsSave [$] -
Sweetheart Neckline Backless Tie Front Mini Dress
1.0 / 5.0
(1) 1 total reviews
Regular price £46.48Regular priceUnit price / per£71.50Sale price £46.48backlessCLOTHINGCustom SizeDRESSESEVENING DRESSEVENING DRESSESFormal Evening DressLong Evening DressLong PromMERMAID PROM DRESSMermaid Prom DressesNEW ARRIVALNEW DESIGNPARTY DRESSPARTY DRESSESPROM DRESSPROM DRESSESprom sleevelessprom straplessSEQUINStraplessTRENDINGTRENDSWedding & EventsSave [$] -
Lace Patchwork Short Sleeve Casual Dress
1.0 / 5.0
(0) 0 total reviews
Regular price £40.15Regular priceUnit price / per£47.29Sale price £40.15backlessCLOTHINGCustom SizeDRESSESEVENING DRESSEVENING DRESSESFormal Evening DressLong Evening DressLong PromMERMAID PROM DRESSMermaid Prom DressesNEW ARRIVALNEW DESIGNPARTY DRESSPARTY DRESSESPROM DRESSPROM DRESSESprom sleevelessprom straplessSEQUINStraplessTRENDINGTRENDSWedding & EventsSave [$] -
Ivory Lace Jewel Neck A-Line Sweep Short Sleeves Two-piece Wedding Dress
1.0 / 5.0
(0) 0 total reviews
Regular price £148.50Regular priceUnit price / per£220.00Sale price £148.50backlessCLOTHINGCustom SizeDRESSESEVENING DRESSEVENING DRESSESFormal Evening DressLong Evening DressLong PromMERMAID PROM DRESSMermaid Prom DressesNEW ARRIVALNEW DESIGNPARTY DRESSPARTY DRESSESPROM DRESSPROM DRESSESprom sleevelessprom straplessSEQUINStraplessTRENDINGTRENDSWedding & EventsSave [$] -
Printed White Button Front Long Sleeves Shirt Dress
1.0 / 5.0
(1) 1 total reviews
Regular price £42.99Regular priceUnit price / per£93.50Sale price £42.99backlessCLOTHINGCustom SizeDRESSESEVENING DRESSEVENING DRESSESFormal Evening DressLong Evening DressLong PromMERMAID PROM DRESSMermaid Prom DressesNEW ARRIVALNEW DESIGNPARTY DRESSPARTY DRESSESPROM DRESSPROM DRESSESprom sleevelessprom straplessSEQUINStraplessTRENDINGTRENDSWedding & EventsSave [$] -
Black Cork Wedge Platform Sandals with Ankle Strap
5.0 / 5.0
(3) 3 total reviews
Regular price £126.45Regular priceUnit price / per£220.00Sale price £126.45backlessCLOTHINGCustom SizeDRESSESEVENING DRESSEVENING DRESSESFormal Evening DressLong Evening DressLong PromMERMAID PROM DRESSMermaid Prom DressesNEW ARRIVALNEW DESIGNPARTY DRESSPARTY DRESSESPROM DRESSPROM DRESSESprom sleevelessprom straplessSEQUINStraplessTRENDINGTRENDSWedding & EventsSave [$] -
V-Neck Sleeveless Criss-Cross Spaghetti Straps Lace-Up Backless Wedding Dress
Regular price £120.45Regular priceUnit price / per£0.00Sale price £120.45backlessCLOTHINGCustom SizeDRESSESEVENING DRESSEVENING DRESSESFormal Evening DressLong Evening DressLong PromMERMAID PROM DRESSMermaid Prom DressesNEW ARRIVALNEW DESIGNPARTY DRESSPARTY DRESSESPROM DRESSPROM DRESSESprom sleevelessprom straplessSEQUINStraplessTRENDINGTRENDSWedding & Events -
V-Neck Half Sleeves Lace Bohemian Maxi Dress
Regular price £33.00Regular priceUnit price / per£71.50Sale price £33.00backlessCLOTHINGCustom SizeDRESSESEVENING DRESSEVENING DRESSESFormal Evening DressLong Evening DressLong PromMERMAID PROM DRESSMermaid Prom DressesNEW ARRIVALNEW DESIGNPARTY DRESSPARTY DRESSESPROM DRESSPROM DRESSESprom sleevelessprom straplessSEQUINStraplessTRENDINGTRENDSWedding & EventsSave [$] -
Deep V-Neck Lace Embroidered Hollow Maxi Dress
4.666666666 / 5.0
(3) 3 total reviews
Regular price £35.00Regular priceUnit price / per£55.00Sale price £35.00backlessCLOTHINGCustom SizeDRESSESEVENING DRESSEVENING DRESSESFormal Evening DressLong Evening DressLong PromMERMAID PROM DRESSMermaid Prom DressesNEW ARRIVALNEW DESIGNPARTY DRESSPARTY DRESSESPROM DRESSPROM DRESSESprom sleevelessprom straplessSEQUINStraplessTRENDINGTRENDSWedding & EventsSave [$] -
Floral Printed One Shoulder Split Hem Maxi Dress
5.0 / 5.0
(2) 2 total reviews
Regular price £29.99Regular priceUnit price / per£93.50Sale price £29.99backlessCLOTHINGCustom SizeDRESSESEVENING DRESSEVENING DRESSESFormal Evening DressLong Evening DressLong PromMERMAID PROM DRESSMermaid Prom DressesNEW ARRIVALNEW DESIGNPARTY DRESSPARTY DRESSESPROM DRESSPROM DRESSESprom sleevelessprom straplessSEQUINStraplessTRENDINGTRENDSWedding & EventsSave [$] -
Navy Lace Patchwork Maxi Dress
3.0 / 5.0
(0) 0 total reviews
Regular price £82.50Regular priceUnit price / per£71.50Sale price £82.50backlessCLOTHINGCustom SizeDRESSESEVENING DRESSEVENING DRESSESFormal Evening DressLong Evening DressLong PromMERMAID PROM DRESSMermaid Prom DressesNEW ARRIVALNEW DESIGNPARTY DRESSPARTY DRESSESPROM DRESSPROM DRESSESprom sleevelessprom straplessSEQUINStraplessTRENDINGTRENDSWedding & Events -
Purple A-Line Sleeveless Long Prom Dress
Regular price £85.00Regular priceUnit price / perbacklessCLOTHINGCustom SizeDRESSESEVENING DRESSEVENING DRESSESFormal Evening DressLong Evening DressLong PromMERMAID PROM DRESSMermaid Prom DressesNEW ARRIVALNEW DESIGNPARTY DRESSPARTY DRESSESPROM DRESSPROM DRESSESprom sleevelessprom straplessSEQUINStraplessTRENDINGTRENDSWedding & Events -
Black V-Neck Sleeveless Flower Embroidered Tulle Maxi Dress
Regular price £35.00Regular priceUnit price / per£52.99Sale price £35.00backlessCLOTHINGCustom SizeDRESSESEVENING DRESSEVENING DRESSESFormal Evening DressLong Evening DressLong PromMERMAID PROM DRESSMermaid Prom DressesNEW ARRIVALNEW DESIGNPARTY DRESSPARTY DRESSESPROM DRESSPROM DRESSESprom sleevelessprom straplessSEQUINStraplessTRENDINGTRENDSWedding & EventsSave [$] -
Squared Toe Chunky Heel Ankle Strap Party Shoes
Regular price £54.73Regular priceUnit price / per£24.19Sale price £54.73backlessCLOTHINGCustom SizeDRESSESEVENING DRESSEVENING DRESSESFormal Evening DressLong Evening DressLong PromMERMAID PROM DRESSMermaid Prom DressesNEW ARRIVALNEW DESIGNPARTY DRESSPARTY DRESSESPROM DRESSPROM DRESSESprom sleevelessprom straplessSEQUINStraplessTRENDINGTRENDSWedding & Events -
Elegant Mother Of The Bride Wedding Guest Dress
5.0 / 5.0
(1) 1 total reviews
Regular price £59.99Sale price £59.99Unit price / perbacklessCLOTHINGCustom SizeDRESSESEVENING DRESSEVENING DRESSESFormal Evening DressLong Evening DressLong PromMERMAID PROM DRESSMermaid Prom DressesNEW ARRIVALNEW DESIGNPARTY DRESSPARTY DRESSESPROM DRESSPROM DRESSESprom sleevelessprom straplessSEQUINStraplessTRENDINGTRENDSWedding & EventsSave [$] -
V-Neck Batwing Bohemian Printed Long Beach Cover-Up Dress
1.0 / 5.0
(0) 0 total reviews
Regular price £26.99Regular priceUnit price / per£54.95Sale price £26.99backlessCLOTHINGCustom SizeDRESSESEVENING DRESSEVENING DRESSESFormal Evening DressLong Evening DressLong PromMERMAID PROM DRESSMermaid Prom DressesNEW ARRIVALNEW DESIGNPARTY DRESSPARTY DRESSESPROM DRESSPROM DRESSESprom sleevelessprom straplessSEQUINStraplessTRENDINGTRENDSWedding & EventsSave [$] -
Satin Matte Deep V-Neck Sleeveless Floor-Length Bridesmaid Dress
Regular price £93.49Regular priceUnit price / per£0.00Sale price £93.49backlessCLOTHINGCustom SizeDRESSESEVENING DRESSEVENING DRESSESFormal Evening DressLong Evening DressLong PromMERMAID PROM DRESSMermaid Prom DressesNEW ARRIVALNEW DESIGNPARTY DRESSPARTY DRESSESPROM DRESSPROM DRESSESprom sleevelessprom straplessSEQUINStraplessTRENDINGTRENDSWedding & Events -
Black A-Line One-Shoulder Spit Leg Floor-Length Prom Dress
5.0 / 5.0
(4) 4 total reviews
Regular price £110.00Regular priceUnit price / per£0.00Sale price £110.00backlessCLOTHINGCustom SizeDRESSESEVENING DRESSEVENING DRESSESFormal Evening DressLong Evening DressLong PromMERMAID PROM DRESSMermaid Prom DressesNEW ARRIVALNEW DESIGNPARTY DRESSPARTY DRESSESPROM DRESSPROM DRESSESprom sleevelessprom straplessSEQUINStraplessTRENDINGTRENDSWedding & Events
FAQs
Everything You Need to Know
Where is Prettyunik based?
Prettyunik is a UK-based brand offering premium-quality dresses that blend comfort, style, and confidence.
Do you offer customizations for dresses?
Yes, we provide free customizations to ensure your dress fits perfectly and matches your preferences.
What are your processing and delivery times?
We process orders within 3-5 business days. Shipping takes:
- Standard: 5-9 business days
- Express: 5-7 business days
Total delivery time = Processing Time + Shipping Time.
Do you provide tracking information?
Yes, we provide detailed tracking information that allows you to monitor your order up to the last mile of delivery.
What is your return policy?
We offer a 30-day hassle-free return policy, giving you peace of mind with every purchase.
Do you ship internationally?
Yes, Prettyunik delivers to most locations worldwide, so you can enjoy our dresses wherever you are!
