I've just found a small moment of clothing inflation in an episode of the anime Yatterman. (The Scooby Doo of Anime) You can watch the episode here.
The actual moment occurs at 2:30.
For those wondering what the heck is going on, the Doronjo Gang (The blonde woman in leather and her two dim cronies) start every episode of the show with a scam or con to rip people's money off. In this case, it involves inflatable jackets for teenagers in the off chance Shibuya is flooded over. (I'm guessing here...)
I don't about the inflation, but that woman in the yellow jumpsuit isn't bad looking.