I think she's the 1st British artist who is actually more popular in the US then over here, she's charted on the charts over there with songs we havnt even heard over here.
http://en.wikipedia.org/wiki/Natasha...ld_discography
The only person I can think of is MIA "Paper Planes" last year who didnt even reach the Top 10 here but got in the Top 5 in the US and is still in the charts after a whole year.