SUMU&SU is an online modest fashion brand based in London, aiming to provide customers with unique and chic clothes for any occasion. The brand was founded by two sisters with a passion for designing, fashion, styling and a deep love for all things pink and cute. Together, we both worked extremely hard to produce one of a kind pieces, made with excellent quality fabric in the most beautiful colour palette to ensure you that no other shop sells the pieces we sell. All of our fabrics are sourced from the UK and the finished pieces are handcrafted with care in the UK. 


We hope you love our pieces as much as we loved designing them!


If you have any questions, we would love to hear from you! Please feel free to send us an email and we will get back to you as soon as possible. 

Thank you for your message, please allow 3 working days for us to respond


We accept exchanges and returns on all products. You can exchange a product you have previously purchased for a smaller or larger size, or for an alternative design. Before exchanging please email us at info@sumuandsu.com to ensure your required style or size is in stock, as our stock list is extremely limited. Any returned items must be returned to us in the same unworn condition, unwashed with any tags still intact and in the packaging. Products must be sent within 7 days of the buyer receiving it. All shipping costs are incurred solely by the buyer.


It is the responsibility of the buyer to ensure the item is safely received back by us, we recommend the item be returned in the form of recorded delivery. We will not accept responsibility for items lost in transit and will not reimburse the cost of return shipping costs.


If you are returning item(s) to us from outside of the EU, you must complete customs declaration, clearly stating that the package contains ‘RETURNED GOODS’. If your parcel is stopped at UK Customs and a charge levied, we will refuse payment and the package will be returned to the sender. Under no circumstances can we pay customs duty in order to receive back our items.

We reserve the right to refuse your exchange if the above procedures have not been followed.

Please ensure all details are checked thoroughly before confirming your purchase.


All SUMU&SU products are produced by hand so unfortunately small defects can sometimes occur. If in an instance any items are received faulty, please return your package back to us within 7 days of receipt for a replacement. Please ensure to get in touch before returning any items back to us within 24 hours of receiving your order. You can do this by emailing us on info@sumuandsu.com with the details of your order and images of the fault and a member of our team will get back to you.


Please refrain from using any items after finding a fault, as we may not be able to provide a replacement once the product has been used. We will cover standard shipping charges incurred in the return of a faulty product. Please note, We will not cover any additional services you wish you to use.


Please note, items with small marks or stains are not seen as faulty. This is simply due to bulk storage facilities of our fabric suppliers. We advise buyers to wash products before wearing, and so these marks will easily be washed off. Hand wash is advised.