Footage of singer Lady Gaga waving at her fans from the roof of her hotel in Montreal, Canada after she cancelled her show due to illness. <br /><br />The video, shot on September 4, shows dozens of 'monsters' gathered outside the star's hotel, singing her song 'Diamond Heart' before she made a brief appearance.<br /><br />Gaga cancelled her Montreal show after falling ill and ordered pizza for her fans waiting outside her hotel to make up for the cancellation.
