Girls' metallic one-piece swimsuit

This fit perfectly when my daughter first tried it on. After wearing it to the beach for a day I don't know if the water stretched out the straps, but it falls too low in the front and doesn't cover her. I am constantly trying to keep it pulled up in front. And most of the metallic sparkles came off that day in the front. I'm guessing that was from the sand? Probably wouldn't come off just at a pool. I really loved this suit before it started dropping too low in front after a day of wearing it. I can handle the metallic sparkle coming off, but now she never wants to wear it because I am constantly pulling the front up to cover herself.