Since the topic of this film is Jon Dough having sex with 101 girls, one gets only brief shots of each of the girls. Those wanting to play "spot the Brit Girl" should not read on!
Donna and Hayley turn up just over an hour into the film, in a scene involving a sex-swing, outside at night. Hayley has both anal and vaginal sex with Jon, whilst Donna fondles her. Donna then does vaginal and anal, with Hayley playing with her. Sharon Brady is harder to identify, but is most likely the blonde who appears directly after Donna, also on the sex swing (condom used).
Notes by Mr Anon