'Peri was one of the more controversial companions, with some critics complaining about the motivation for adding a character who spent much of her time on screen wearing revealing outfits. Series producer John Nathan-Turner admitted that Peri was created to add sex appeal to the series. Similar criticisms had been levelled against the character of Leela nearly a decade earlier. Beginning with the story Timelash, and continuing through the Trial season, Peri's mode of dress became more conservative.'
'created to add sex appeal to the series' - No shit, Sherlock!