Frequently Asked Questions

We recommend checking out our size guide and fit quiz. You'll find it on every product page under sizes. Not sure between two sizes? Go for the smaller one. Our swimwear is made from comfortable, stretchy fabric that adapts to different body types.

Orders placed before 22:30 are usually shipped the same day. Click here to see the average delivery time for your destination.

Click here to see shipping costs for your destination.

On orders over €100, we cover the shipping costs for you.

We ship to most countries across Europe. Click here for an up-to-date overview of all the countries we deliver to.

Yes. Once your order has been processed by the carrier, you'll automatically receive an email with a Track & Trace code. That way you can easily track your order.

Billie swimwear is shipped in compact packaging. Whether you need to be home depends on the size of your order. Not home? The carrier will let you know what happens next.

Yes. You can easily submit your return via our returns page. For hygiene reasons, we only accept returns when: The item is unworn and unwashed The hygiene strip is still intact All labels are still attached The item shows no makeup stains, odours or other signs of use

Unfortunately exchanges aren't possible. You can easily return your items via our returns page and then place a new order yourself in your desired size or colour.

Yes, please do — much more sustainable ð± You can combine multiple returns in one package. To do this, submit one return in our system and gather all items together. Don't forget to include a note with all your order numbers so we can process your return correctly.

Sign up for the Back in Stock email on the product page. Choose your desired size and colour and register. As soon as the product is back in stock, you'll automatically get a notification.

Billie is designed by women, for women. Our swimwear combines comfort, a flattering fit and sustainable materials with clever designs that actually feel great to wear. Plus, our pieces are reversible, so you get two looks in one item. That means more ways to wear them with fewer pieces.

No. Our swimwear is made from high-quality fabrics and features two layers of fabric, because every item is reversible. This double layer gives you extra coverage, so the swimwear feels comfortable and confident whether it's dry or wet.

Absolutely. Billie is designed for real women. With different styles and the freedom to mix and match tops and bottoms, you can choose a combination that suits your body and your preferences.

Some Billie styles are designed with the look of a one-piece, but the ease and flexibility of a bikini. These sets feature a top and bottom that together create a one-piece aesthetic, while you get all the benefits of a bikini. That means you can find the right size more easily for both top and bottom, you'll enjoy extra comfort on beach days, and using the loo becomes a whole lot simpler. Click here to shop our one-piece look styles.

Yes. Our swimwear is designed with comfort and support as our starting point. Because our reversible swimwear features two layers of fabric, it offers a comfortable and flattering fit. Combined with the stretchy quality and carefully designed styles, your swimwear stays in place while you swim, sunbathe and move around.

Yes. Our swimwear is designed for active beach and pool time. Thanks to the comfortable fit and high-quality stretch fabric, your swimwear sits beautifully while you swim and move. Planning to do a lot of swimming, surfing or other water sports? If you're torn between two sizes, the smaller size might work better for you for a slightly more snug fit.

Yes. Our swimwear is made from a really soft, high-quality stretch fabric that feels lovely on your skin. Because our pieces are reversible, each design is made from two layers of fabric. This means your swimwear feels comfortable and gives you the perfect balance between softness, support and freedom of movement.

Our swimwear is made from high-quality elastic fabrics designed to hold their shape beautifully. Planning to do a lot of swimming, surfing or other water sports? If you're between sizes, going for the smaller size can give you a slightly more fitted feel.

Yes. Our tops come with removable cups that you can easily take out or put back in through the subtle side openings.

Yes. Our swimwear is designed to be worn on both sides. So you get two looks in one piece. Because each item is made from two full layers of fabric, you get not just two different looks, but also extra comfort and coverage.

Our swimwear is made from sustainable ECO-material, created from recycled materials like PET bottles recovered from ocean areas and beyond. Composition 82% recycled polyamide 18% elastane We chose this fabric for its comfort, stretch and durability, with a conscious approach to material selection.

We believe beautiful swimwear doesn't have to come at the planet's expense. By using recycled materials, we give existing resources a second life and reduce demand for new raw materials.

Yes. Our recycled fabrics are chosen for quality, comfort and durability. They offer the same stretch, softness and wearing experience you'd expect from premium swimwear.

Our reversible designs give you two looks in one piece. That means you need fewer items to create different outfits. That makes your wardrobe more versatile and more conscious.

To get the most out of your swimwear, we recommend: Hand wash or use a hand wash/delicate cycle at maximum 30°C Rinse your swimwear with cold water after use Lay flat to dry Don't use the tumble dryer Avoid prolonged exposure to direct sun while drying Avoid rough surfaces that could damage the fabric Disclaimer: Despite careful care, slight colour fading, wear or changes in elasticity may occur over time due to use, sun, salt, chlorine, sand and washing. This is normal for swimwear.

Our fabrics are selected for quality and durability. Like all swimwear, prolonged exposure to sunlight, salt water and chlorine may affect colour and elasticity over time. By rinsing your swimwear after use and following the care instructions, it will stay beautiful for longer.

Our swimwear is made from high-quality materials and designed to last. Proper care helps significantly. However, swimwear is among the most intensively used clothing items. It regularly comes into contact with salt water, chlorine, sand, sunlight and often stays wet for extended periods. How long your swimwear lasts therefore depends on use, conditions and care. By looking after your pieces properly, you can significantly extend their lifespan.

Yes. We stand behind the quality of our products. If you happen to discover a manufacturing or production defect, feel free to contact our customer service. Please include clear photos and a description of the issue so we can work with you towards a suitable solution. Normal wear, colour fading from sun, chlorine or salt water, damage from misuse and other signs of wear are not covered by the warranty. We assess every report individually and always aim for a fair and customer-friendly solution.