Yoga in a kilt? It's a thing.
Classic asana poses include: downward dog, half lotus, bound angle, two-legged Kaudinya, one-legged headstand, reverse triangle, wide stance forward bend, supported headstand, reclining hero, wide-angle seated forward bend, upwards bow, extended side angle, and inverted staff.
New and innovative poses are developed all the time and may or may not be suitable for kilt wearers going regimental. They include:
Knee to Ear Pose
Yogi Staff Pose
To take a look at these to assess the impact on the devoted kilt-wearer, click the book cover.