From the Toronto Star, on the 2008 Worlds:

Friskiest costume was revealed by John Kerr, the boy side of the brother-sister ice-dancing tandem from Britain. He donned a kilt for their Scottish original dance program and, given the free-swinging movements, showed what a Scotsman wears under one of those things: Bicycle shorts. At the end of the routine, he also flashed for the audience.

"As the kilt is the national Scottish dress and they wanted to see national dresses this year, luckily for us they cannot give us a deduction."
Regards,
Rex.