My yoga pants are 10 years old or so. Until last year they had a new look to them because I rarely wore them. I didn't like how fitted they were. That's no longer the problem.
I've worn and washed them so often that the legs got baggy and holey, in particular around the knees. I wonder why the knees since I can't bend them. I lost the ability to sit cross-legged in my late 30s. I wonder if I can do that again if I were to get knee replacements.
Anyway, back to the holey yoga pants. By today's standards of yoga pants, mine are loosey-goosey, which I like and which means I won't find a similar pair ever. Fortunately, the rest of my holey pair of yoga pants still has a lot of wear to them. Simply patch the knees, right?
I've only sewn stretchy material once or twice. I always got nervous, panicky, even a bit scared. Today, I nipped all that in the face, and had a lot of fun. :-)