sazanami (swimsuit mode) (kancolle)
The bikini official alternate costume of Kantai Collection's Sazanami, as seen in post #2584413.
She is portrayed with a frilled blue bikini, a pleated blue skirt (carried over from her uniform), purple wrist scrunchie and bracelets, purple platform shoes, single anklet, and her funnel accessory rigging plus triple torpedo tubes on thigh straps.
This tag implicates sazanami_(kancolle) (learn more).