Here is the honest answer. Seychelles has no large bridal boutique where you walk in and choose a gown off the rail. There is a small bridal shop in Victoria, Exquisite Bridals, which also makes dresses in-house, and made-to-measure is possible through a service like D&D Clothing if you plan well ahead. But for the specific dress you have pictured, the choice is nothing like a city at home, so the gown stays the one thing we tell almost every bride to bring with her. Where the island genuinely earns its keep is the finishing, a steam, an alteration, a small repair once you arrive, which is usually all a travelling bride actually needs.
Bring the dress, do not plan to buy it here
Unless you have arranged a made-to-measure gown months ahead, buy your dress at home, where you have the choice, the fittings and the time. Then bring it in your hand luggage, never in the hold. Fold it in tissue paper inside a garment bag and most cabin crew will hang it if you ask kindly and early. This is the single most important thing, because a dress that arrives creased or lost is the only real dress emergency at a destination wedding, and it is entirely avoidable.
What the islands can do for the dress
Once you land, the humidity that bothers your hair does your gown a favour. Hang it in a steamy bathroom overnight and most creases fall out on their own. Beyond that, we work with a trusted seamstress on Mahe for a professional steam, a last-minute alteration or a small repair, and Victoria's own bridal shop, Exquisite Bridals, works with gowns too if you would rather go direct. It matters because bodies change a little between the final fitting at home and the wedding week. If you want, we arrange it so the dress is collected, pressed and returned to your room before the day.
A second dress, and the groom
Many brides bring a second, simpler dress for the evening, not for show but for the joy of dinner and dancing without a train. A plain slip dress packs to nothing and photographs beautifully at sunset. The groom is easier still, and has his own question answered on our page about what to wear in the heat, but the short version is light linen, brought from home, no heavy suit.