You could hunt for a random pink tartan online and make knockaround kilts for the wedding, or even tartan X-Kilts. They go together fast, will work OK for a non-formal wedding and an X-Kilt won't break the bank if the thing is unwearable afterwards.... which I suspect it might be.

the groomsmen can give them to sew-savvy wives and girlfriends who can pull out a mess of pleats and narrow the over-apron and call them skirts.

Random Pink Tartan on ebay:
http://cgi.ebay.co.uk/PINK-GREY-TART...QQcmdZViewItem

I actually like that....Huh.. I'd probably wear that. It's a twill weave, though it's not worsted, not a "kilt finish" at all but it'd probably be OK. It's 3 meters long and 155 cm wide, so plenty for a 6-yard-plus kilt. Might look pretty reasonable.

You could also go solid-color

http://cgi.ebay.com/10-Y-100-ORGANIC...QQcmdZViewItem

Personally I'd not be caught dead in an X-Kilt made out of that stuff and if my bride asked me to wear it I'd tell her that I loved her to pieces but No. But that's me. Banging out 4 X-kilts in solid pink would work, or if you don't like X-Kilts just make simple knife-pleated knockaround casual kilts. Sounds like a great project for the maid of honor and her mother..