Apparently she didn't see the sign reading "No Non-Fatties."
(via KTVU)

Tiffany Austin, a singer-songwriter from Richmond, California, has recently been recovering from a car crash. After finally getting the all-clear from her doctor, she was excited to go to the gym and get back in shape. As she explained to Oakland's KTVU, she toured Planet Fitness, a chain of gyms best known for their "no judgments" atmosphere, which includes a "lunk alarm" for people behaving like gym douches, and a clothing policy against spaghetti straps and other revealing items of clothing. As gym patron Geovanna Gorges told KTVU, "it's unfair to show off your body."

Sources: KTVU