Nike was the first activewear brand I ever tried, and it's worked for my small frame for years. It too offers a shorter inseam for leggings (27.5 inches, typically), and its XS products skew small (I've even sized up to an S in some items, which is super rare for me!). This comes in handy for long-sleeved tees with those convenient little thumb holes for running — you don't have to bunch up the arms to get the right fit. Like Lululemon, Nike offers free pant hemming in-store.
Nike Therma Sphere Element Women's Running Top ($75)