Charlie has asked you to stand in on her fitness session as her usual trainer is away, she is new to boxing but wants to impress you, as she is hitting the punching bag you notice that her top is slipping up over her boobs and nipples and you are getting a great under boob view, when she notices what is happening and tries to pull the top down the gloves get in the way and she makes it worse! You tell her off for losing her concentration and tell her to leave the top alone, she does as she is told and you get to enjoy the rest of the session watching her boobs bounce around while she lays into the punching bag.