I'm about to set my vacation to my favorite island st. martins with lot of my friends. in that island, the normal dress code is only string/micro bikini (all girls wear) which I've never tried before. what's the main difference of the measurement between normal and string bottom? my waist is 29", hips 35". should i buy the top smaller to maintain the equality/similarity to the bottom? (NB: 34-32-34) and a sarong? lastly, i wanna ask which color is preferable in white sandy beach? (my skin is Brazilian white and the hair is black) pls be in mind I'm not gonna be in nude/topless beach...!