It took place at a small gig in Angola, Indiana over the weekend
'What Do You Mean?' was streamed 3.2 million times in the UK in a week, and sold 84,000 copies
Canadian singer's new single 'What Do You Mean?' is also set to become his first UK Number One single
Canadian singer has never had a UK chart-topping single
'Girls' creator appeared to criticise Bieber in a previous social media post
Bieber's new single was produced by Skrillex
Track to appear on singer's forthcoming new album
Ceremony takes place in Los Angeles on Sunday (August 30)
Tobias Strebel spent nearly $100,000 (£63,000) on plastic surgery to look like the singer
Tobias Strebel (formerly Toby Sheldon) was last seen on August 18 in West Hollywood