The One Piece is probably underwear/panties : r/OnePiece

SIGNATURE SWIM THONG

One Piece Anime Underwear & Panties - CafePress

15 Best Long Torso Swimsuits of 2024

Lilac One Piece Swimsuit Bodysuit, Cami Straps High Cut, Crinkle Stetch Lycra, S-M

m.media-.com/images/M/MV5BMTcwODU0NzUxM15BMl

The Cheeky Tanga in Black (Side-Fastening Underwear with Velcro) – Liberare

The 6 Best Underwear Bottoms for Travel in 2024

Cashback (2006) - IMDb

Sand Deep V One Piece Swimsuit, Ark Swimwear