American Airlines staff prevented model Olivia Culpo, winner of the title of Miss Universe 2012, from boarding the plane because of the dress code.
According to People, Culpo chose a comfortable outfit for the flight: a sports top and bike shorts.
The model was asked to wear something on top of the top, otherwise she would not have been allowed on board. Olivia's sister was outraged by this treatment, but the model herself did not argue with the airline's requirements and put on a cardigan on top.
This helped and the sisters got on the plane safely.