Here's the article:

http://www.digitalspy.co.uk/dancingo...feel-sick.html

Maybe this is the reason for the stage-school smile she has...she is covering up her intense nerves.

Well she does visibly shake after every routine,

I love her smile - nerves or no nerves - and wouldn't call it "stage school" at all. She and Dan seem to have a real connection and their smiles seem genuine.

I agree with you !! I'm just quoting some other people that have commented on how her smile annoys them. I think it's nice to see somebody loving what they are doing.