I'm pretty sure this is the exact post I wrote about 6 months ago! (Have now lost 3 stone doing Zumba and are one of those eager people at the front!) I wear cheap unbranded shoe zone trainers, sometimes cropped leggings, sometimes joggers, a tank top or dps tee shirt and sports bra, hair dragged back into a tight pony tail and Sports bra.. Remember the sports bra! Whatever you wear I'm sure someone else will be too! Good luck!