Wet fabric will highlight your shapes, but will leave room for imagination that will get your partner too eager not to go for action as fast as possible.
Wear something white and light on your naked body. You can leave a white tank top/T-shirt and panties on. Once wet, that kind of clothes will become almost transparent and this is a turn-on for both.
Fill the sprinklers with water and start having fun! Don’t forget to put a water resistant sheet on the floor or play in the bathroom. When the water runs out, see who is winning. It’s up to you to decide who wins: the one who looks sexier in wet clothes or who has less water on their clothes.