To matsuri properly, one must invest in some traditional Japanese clothing.
The kiddies in this photo are wearing yukata, or summer kimono made of cotton. Small kids and boys can also wear jimbei, a short-and-top combination. I’m a big fan of jimbei—they’re fantastically comfortable—but I’ve been told it’s not becoming of a grown, child-having woman to wear one. *sigh*
But I love my yukata, too, so it’s all good.