In Brazil's booming economy, some parents are spending more than £100 000 on their daughter's special day. But in a country with a huge gap between rich and poor, not everyone is invited to the party. In this documentary, Porter teams up with two modern-day 'Cinderellas' who are hoping their dreams of making it to the ball will come true.

Secrets of South America: Cinderellas of the Slums airs from Saturday, 11 October at 19:10 on BBC World News, channel 400 on DStv.