Dozens of people are expected to show up to a demonstration in Waterloo, Ont. on Saturday, a week after three topless women were stopped by police.

Alysha Mohamed and her two sisters, Tameera and Nadia, were on an evening bike ride in Kitchener-Waterloo on Friday when they were pulled over by a police officer.

The women had been biking in the downtown area with their shirts off because of the heat, Brilla told CTV Kitchener.