Singer's second album '21' has surpassed Michael Jackson's classic
Singer denies Jason Mraz his first UK Number 1
Reports reckon '21' songstress will serenade the couple at their nupitals
Florence Welch and Jessie J have also had very good financial years
Gotye's 'Somebody That I Used To Know' is also named as the biggest selling single of this year thus far
'21' singer admits she's always been a massive fan of the star
'He thinks she's beautiful,' grovels a source close to fashion designer
Songstress says she'll have something out in 2012 – but it won't be the follow-up to '21'
'21' is now the UK's sixth biggest seller of all time
British artists accounted for 11.7% of all albums sold in US in 2011