Here is a Sims 4 bikini that is super cute and comes in so many variations! Not only do you have 28 different swatches with both patterned fabrics as well as solid colors, but there is a strapless version as well! There are so many options to pick from with this set, and all the patterns are cute and summery. Download here for free from Lazy_Eyelids on their Patreon.