Her underwear

" ... your underwear. You aren't allowed to wear underwear in this gym." "NO! Please don't do this!", she beggs with tears in her eyes. She takes off her bra, to show you her firm breasts with pink nipples. Then she awkwardly takes off her yoga pants, which are followed by her panties. Now she puts her yoga-pants back on. She blushes and covers up her breasts. "Good!", you comment smirking. "Please, I don't make me stay this way! I-I don't want to be dressed like this!" You look at her again and see how embarrassed she is. So you reconsider this situation: "Well, I could change something about your outfit ..."