That's not a sporran. It's a sheer kilt.
(Okay, that was just WRONG).

Besides, I thought Fred was supposed to be with Wilma.

I actually found a site last year that had a list of film appearances with kilts. I'll need to do a "Google" search to find it again, but it was quite extensive! As soon as I get it, I'll post the link... unless someone beats me to it.