The 22-year-old also showed off his skills on the pitch with a series of left-footed finishes Messi would be proud of in a kick around with Neymar and midfielder Rafinha.

"Impossible to dribble this defender... @justinbieber," Neymar posted to his 26 million Twitter followers with a photo of the Brazilian dispossessing Bieber.

Hundreds of Beliebers -- as Bieber's dedicated fan base are known -- have queued for up to a month outside Madrid's Palacio de Deportes where Bieber will perform on Wednesday just to get as close as possible to their idol when the gates finally open.

However, even a social media phenom such as Bieber can't compare to Messi's numbers.

Bieber's 77 million Facebook likes falls 10 million behind five-time World Player of the Year Messi's tally.