I don't know if you are trying to be historically accurate in your clothing or not, but there were no kilts in medieval Scotland. What you saw in Highlander was a Hollywood costumer's interpretation of the feilidh-mhor (aka breacan-feile or belted plaid, or "great kilt"). This is the earliest form of kilt that cannot be documented any earlier than the very end of the sixteenth century (1594) and was common during the seventeenth century and the first half of the eighteenth.

So, for something set in the Middle Ages, this would be quite anachronistic.

See this article to get a good time line of the development of the kilt:
http://albanach.org/generations.html

And more specifically on the feilidh-mhor:
http://albanach.org/kilt.html

Further reading:
http://www.reconstructinghistory.com...=&g=&a=134&w=2

And a great website for accurate information on Medieval Scotland:
http://www.medievalscotland.org/