The 'Doo-wops & Hooligans' star played his biggest hits for Capital FM fans at the Jingle Bell Ball 2012 at London's O2 Arena. See the pictures from Bruno Mars' set here.
Bruno Mars Retains US Lead With 'Locked Out Of Heaven' On Billboard Hot 100
Taylor Swift has also retained her number one spot with 2012 album 'Red'.
Bruno Mars has topped the US Billboard chart for the fourth week in a row with his huge worldwide hit 'Locked Out Of Heaven'.
The 'Marry You' singer has scored another week at number one on the US Billboard Hot 100 with the lead single from his newly released second album 'Unorthodox Jukebox', while Rihanna's single 'Diamonds' retains its spot at number two.
US folk rock band The Lumineers continue to find success with their single 'Ho Hey' at number three while Taylor Swift's latest release 'I Knew You Were Trouble' rises six places to number four.
Justin Bieber's 'Beauty And A Beat' rounds out the top five songs of the week, fresh from New Year's Eve on Monday (31st December).
Check out a picture of Bruno Mars performing live at the O2 Arena last month for the Capital FM Jingle Bell Ball 2012 below (Credit: PA):
Taylor Swift's 2012 album 'Red' also retains its number one spot on the US Billboard Top 200 album chart this week, while One Direction's second album 'Take Me Home' is at number four.