I've tried to resist the lure of Lululemon for the past few years ever since my workout nut friend took me to one in England. Back then, I was way too fat to fit into their clothes. Now that I've become a bit of a gym rat myself, I realized my thin Old Navy crops and stained Under Armour shirts weren't cutting it anymore.
The staff at the Chandler store were helpful in explaining the sizing and fit of their pants and tops. Items are arranged from loosest to tighest fit. They also let me know the store offers free hemming which I need being 5'2". Dressing room staff are always quick at retreiving different colors and sizes as needed.
I am absolutely in love with all the items that I've bought at Lululemon. Of course, you need to LOVE what you buy because it's so expensive. So far I've gotten the cool racerback top, wunder under crops, ta-ta tamer and flow-y sports bras. The wunder unders feel and look amazing. The wide waistband makes them flattering, and it never does that annoying roll-down thing. The material is great at absorbing/wicking sweat and doesn't leave any embarassing marks. The racerback tops are long and stay in place doing yoga, spin, or running.
I would recommend this store to anyone who worksout consistently several days a week. The clothes are an investment as a couple outfits could set you back hundreds of dollars. If you are just starting out, stick with Old Navy and Target.