Justin Bieber has announced an extra two dates to his first ever full UK tour, due to take place next year.

The teenage star will now also play at Sheffield on March 23 and Nottingham on March 24.

The singer announced yesterday that he will also now play a further four dates at Liverpool, Newcastle and Manchester.

Tickets go on sale on Friday (November 19) at 9am.

Justin Bieber's 2011 UK tour dates are:

• Birmingham, NIA - March 4/5
• Liverpool, Echo Arena – 11
• Newcastle, Metro Radio Arena – 12
• London, 02 Arena – 14/16
• Manchester, MEN Arena – 20/21
• Sheffield, Motorpoint Arena - 23
• Nottingham,Trent FM Arena - 24

(by Holly Frith)