David Arquette 'thrown out' of Justin Bieber's 21st birthday party after 'punch-up' with pop star
Singer was celebrating at Caesars Palace, Las Vegas
Justin Bieber mocked by Snoop Dogg, Will Ferrell and Ludacris on US TV show Comedy Central Roast
Singer tries to move on from his recent wild antics
Weeping Justin Bieber fans distraught in trailer for his Comedy Central special - watch
Beliebers shown in tears before upcoming roast starring Snoop Dogg and Ludacris
Snoop Dogg, Ludacris and Shaquille O'Neal to 'roast' Justin Bieber in TV special
Controversial pop singer is disappointed that comedian Seth Rogen won't be lining up to poke fun at him
Justin Bieber claims ankle injury prevented him from completing community service
Bieber was sentenced to service after egging his neighbour's house last summer
Justin Bieber working with Rick Rubin?
The popstar posted a picture of the pair together on social media
Justin Bieber named highest-earning entertainer under 30 by Forbes
One Direction, Taylor Swift and Bruno Mars are also included in the list
Justin Bieber faces arrest in Argentina if he does not return for questioning
Local authorities want to ask the singer about an alleged assault which took place in 2013
Justin Bieber limo driver assault charges dropped
The pop singer allegedly struck the driver in the head during an incident in Toronto at the end of 2013
Justin Bieber facing new charges following arrest for dangerous driving and assault
Pop star due to appear in court on September 29