I'm 5ft 10, so tall but not exactly a giant. Still, it's proving hard to find swimming costumes that aren't too short in the body. M&S used to do longer size options, but don't seem to anymore. I just took a chance on an Albary one but it's way too tight on the shoulders. A lot of costumes don't even seem to have adjustable shoulder straps anymore. Any options of where to look? I'm a size 10 - is the answer just to size up? I just want a really plain one for actual swimming, not sunbathing/holidays.