You wrack your brain thinking of your next move, until you notice the side door to your neighbor's garage is open. You slip in and close it behind you. The whole garage is full of stuff from all over the world. Things are piled up to the ceiling and so dense that you can't tell if there is a car parked in here among all this junk, but you doubt there's room for one.
You scurry through the disorganized rows to a remote spot and begin stripping down to your underwear. You slip on the kimono and then begin tying the ribbon around your waist, but there's so much material left over that the trails fall on the garage floor even after you're done. This isn't right. You undo the knot and try a more intricate wrapping method. You tangle yourself up in the rib-- the obi several times until you finally figure out the correct way to thread a nice big bow in front. You rotate the obi sideways to move the bow to the center of your back.
It's hard to see for yourself, but you feel like it's a good fit. The fabric is light and very comfortable, loose and snug in all the right places.
You put on the socks and step into the sandals, but you're not sure what you're supposed to do with the fan. Just carry it? You rummage around until you find something large enough to put your boy clothes in. You pull out a large blue fabric bag with a rope around the opening. You stuff everything inside, along with the fan for now, and tie it closed.
The wooden shoes make loud claps on the cement floor. You hope your neighbor doesn't hear. Before you get to the door, you pass a large, ornate, standing mirror and pause to get a good look at yourself. You realize how lucky you are that everything fits perfectly. The outfit looks really good on you, although you're not exactly fond of the crane pattern, nice looking as it is. After this dare is over you might get your own yukata with dragons on it.
Wait, what? It's not a yukata, it's a kimono. Oh, right, this type of kimono is called a yukata. You remember learning that...somewhere. Your sister must have told you. See? You remember some details after all. Getting into the sleepover is going to be a piece of cake.
As long as you can make yourself a convincing girl, that is.