Two piece swimsuit. See swimsuits for full-body swimsuits.
For two-piece outfits that are clearly worn as outerwear (in other words, not as underwear or a swimsuit),
tag Bikinis -Swimsuits.
Note: Sometimes it can be difficult to distinguish swimsuits from lingerie.
Tag with Bikini if the top is a halter-style top (ties around the neck) or the bottoms tie-on.
Also, use context clues. E.g. if the character is at the beach, tag Bikini.
Please avoid tagging both Bikinis and Lingerie.
For lingerie, use Bra and Underwear.