Jessie J gets ready for US TV debut

Jessie J is getting ready for her big US TV debut.

The singer is set to play 'Saturday Night Live' at the weekend.

She Tweeted 'Omg Saturday night live rehearsals were s s s s sick!!! The band are incredible!!!'

Jessie said: 'The way I'm taking the British flag on to 'Saturday Night Live' doesn't happen very often.'

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