Meeting Felicity for the first time, Wicksteed is instantly consumed with lust for her, and attempts to arrange a tête-à-tête. Muriel finds her old feelings for Shorter rekindled and she too plots a rendezvous. A parcel arrives for Connie: it contains a pair of false breasts. Felicity makes a pass at Dennis and they go off together. Mr Shanks, the fitter from the false-breast manufacturer, arrives and mistaking Muriel for his client rhapsodises about and handles her substantial bust, until realising his mistake. Muriel, aroused to a predatory frenzy, pursues Shanks until interrupted by the arrival of Shorter, who misreading the situation injects Shanks with a powerful tranquilliser. Connie has put on her padded breasts, which make her feel suddenly attractive and confident to the point of brazenness. She mistakes Shorter for the fitter, and invites him to handle her bust. He is aroused and is discovered trouserless by Canon Throbbing, whom he attempts to tranquillise, pursuing him offstage with a hypodermic. Dennis and Felicity declare their intention to marry, but he is sent away by Wicksteed, who then attempts to seduce Felicity. Shorter catches him in the act and threatens to have him disciplined and barred from medical practice. Muriel joins in the denunciation and the uproar is increased by a suicide attempt by Wicksteed's patient Mr Purdue, who is trying to hang himself as Lady Rumpers enters.