According to the Everett Herald, the AP reports...

"LONDON - Great Scot! A shortage of ceremonial kilts could leave thousands of soldiers without a stitch of plaid to wear as they parade to the skirl of the bagpipes. Military officials said Monday that more than 5,000 Scottish soldiers are having to share their kilts because defense chiefs have not finalized a contract to buy enough of the garments to go around."

One ancipates heavy attendance at this year's Edinburgh Tattoo parades, and one assumes the sharing of kilts is sequential and not simultaneous.

UPDATE: I found a reference to the same story on a site called Wiccanweb. Presumbably they'll be able to conjure up more kilts for those unfortunate Scots.

Everett Herald Article