Cutting Edge explores the purity movement in America, where one girl in every six pledges to remain a virgin, or to save her first kiss, until her wedding day. Award-winning documentary-maker Jane Treays investigates whether this decision is made by the girls themselves or their parents, and follows a group of fathers and daughters as they prepare to attend a `purity ball' in Colorado Springs, run by Randy Wilson and his wife Lisa.

Originally broadcast on Channel 4 - 25th September 2008