I had my hitchin' last weekend, and half of the grooms party was kilted - myself, and my (Irish-descended) groomsman Aran.

My kilt is Cameron Ancient Hunting, 16oz Locharron Strome, from Kathy's Kilts. Jacket, sporran, and sgian diubh were rented from Dunedin Scottish at Kathy's recommendation.

Aran is wearing Irish National, all rental, not sure of the source.