Time and place! Even disregarding her weight, there is a time and place to wear leggings and a sports bra without a shirt and walking around city streets unless you are training for a marathon is not it! In Europe, you almost never see Europeans in athletic wear except going to and from the gym or jogging in the streets. Not for walking around or running errands. Sure, I wear leggings when out doing quick errands like shopping, but always with a shirt and never just in a sports bra (even if I might give up a shirt if I'm on a jog and it's hot out).
Gods, she is such an embarrassment!