NWT underwire yellow bikini bandeau strapless

Received this in the mail today from forever21, it's a medium I need large but can't return any swimwear items, especially since I ordered it online. They were sold out of small and medium at my local store so I bought it online. I still have to buy a large so I'm bummed. I'm keeping it in the package. This size is sold out in most stores so this is a find! This is a darkish yellow but still bright. It's not like a pastel yellow but like a jungle deep yellow, perfect color