I think of Oceanus as swimwear with one foot in the after-dark closet. Hannah Attalah launched it in London in 2018 as founder and creative director, with her childhood friend Alexia Frangakis as a co-creator. They saw room for fashion-led swimwear, and that origin still explains why the label feels as at home at a party as on a beach.

Attalah's fashion studies and embroidery training show up in the details. She learned embroidery in the studios of Jean Paul Gaultier and Zandra Rhodes, and 1980s glamour is still the label's favorite reference. The pieces are hand embroidered, made with recycled or eco-friendly materials, and cut and embellished to order across Italy, India and Bali. That mix of handwork and high color is why even a swimsuit here seems ready for a long evening.

Oceanus dresses keep the mood of eveningwear even at mini length. The Mare Wave Mini Dress is sequin-heavy, while the Sofia Hand Beaded Party Dress and Crescent Shell Mini Dress turn the attention to handwork and a sea-life motif. The Marie Sea Full Beaded Dress and Dream Shell Mini Dress push that decorative language further, and the Dreamscape Mini Dress, Candy-stripe Mini Dress and Navy Coral Muse Hand Beaded Mini Dress round out the cast. I would let one dress carry the outfit, with a simple shoe and no competing jewelry.

Picture her arriving at a warm rooftop birthday in the Mare Wave, the pink sequins doing the work before she has taken off her coat. What I would skip: the most heavily embellished dress for a daytime ceremony. Check the size guide before ordering, because these sculptural shapes look best when the fit is considered instead of guessed.

The swimwear keeps its own point of view instead of disappearing under a cover-up. The Paradiso Swimsuit is bead-embellished and unpadded, so I would pack it for the day when lunch might turn into a beach stop. The Dream Shell High Rise Swimsuit has a higher cut, and Mia's Marina Bikini Set is the two-piece for anyone who wants more sun on her shoulders.

Picture her throwing a white linen shirt over Mia's Marina One Piece on the walk back from the water, beads still showing as the afternoon stretches on. The Marie Sea Swimsuit and Dreamy One Piece Shell Swimsuit are more one-piece options, and the Under the Sea Hand-Embroidered Sequin Strapless Swimsuit and Celestial Hand Beaded Night Blue Swimsuit are the dressy end of the range. I would keep the sandals and bag quiet so the handwork stays in focus.

The sets make the handwork useful beyond a swim day. The Coastal Co-ord is a beaded matching set whose blue-coral palette carries the maximalism straight into dinner. The Nerina Multi Vibrant Co-ord and Marie Sea Co-ord follow the same matched idea, and the Azure Coord Mini Skirt and Azure Coord Top can be worn together or split apart. The X Disney Seabreeze Co-ord adds a playful collaboration, and the South Beach Azure Multi Colour Hand Beaded Co-ord and Celestial Night Hand-Beaded Blue Co-ord are the most dramatic of the lot.

Picture her taking the Coastal Co-ord to dinner on a terrace, then wearing its top with plain trousers another day. I would only choose a set if I could imagine both halves on their own, since a single skirt or top often earns its space more. With beaded fabric, a clean shoe and a small bag give the outfit room to breathe.

Oceanus has a clear reason to exist: embroidery, saturated color and a little evening drama, brought to swimwear and resort dressing. I like how the idea runs from a swimsuit to a beaded mini and then into a co-ord without losing its sense of play. These pieces ask for a mood and are not the answer when you want quiet basics. When the invitation calls for color and craft, I would start with one piece that makes the rest of the outfit easy. Although I would probably still pack a second swimsuit.