OS fits all - this is a beautiful set, the color is bubblegum, you can see from my pictures it is slightly more vivid than the pictures on their website! From HUNZA G website: Square neckline and classic bottoms: the Xandra Bikini is ticking all the boxes when it comes to coverage, support and colourways. The signature crinkle fabrication stretches and moulds to your body as it changes. One piece for before, during, and after pregnancy.