September Song JP Cooper
Bruno Mars is back at the top of the chart with his new single, 'Grenade'.
'Grenade' marks Bruno's third time at the top of our chart, having already featured on B.o.B's chart topping hit 'Nothin' on You' as well as his own hit 'Just The Way You Are'.
'Grenade' was this week's highest new entry at No. 1.
The highest climber of week was Jessie J, who was also Rich & Kat's guest on Sunday's show. The BRITs Critics Choice winner's single, 'Do It Like a Dude' was No. 31 in our chart last week but it flew to No. 2 in this week's chart.
The BRIT nominations take place on Thursday evening but Jessie will be stood confidently at the side of the stage as she's already got her award, following in the footsteps of Ellie Goulding and Florence and the Machine
Watch Jessie J's interview with Rich & Kat