Can Jessie bag a No. 1?

Not content with having one song in the chart, Jessie J's brand new song 'Price Tag' looks set to be a high new entry in Sunday's chart.

It's been rushed out this week due to huge demand but can she knock the unstoppable Bruno Mars off of the top spot?

Last Sunday Bruno Mars managed to cling on to the Big Top 40 No. 1 spot for another week, making it a month at the top.

He fought off tough competition from Ke$ha, who will have probably been a little annoyed as he snuck past her at the last minute to claim the top spot.  She gets another chance to get to No. 1 this Sunday with 'We R Who We R' but she'll now she's got Jessie J to contend with as well as Bruno.

We're also expecting new entries this week for Enrique Iglesias' 'Tonight' and P!nk's 'Perfect' plus Chipmunk's 'Champion' is released on Sunday, could he go straight into our live top 10?