'X Factor' group hit by conflict

Brother/sister duo Same Difference have been plagued by tension as they prepare for their seventh X Factor live show.

Sean Smith became annoyed when his sister Sarah went out for dinner on Sunday night, the day before they were due to record the X Factor winner's single, their version of Mariah Carey and Whitney Houston's 'When You Believe'.

He was particularly concerned that his sister had failed to perfect the group's harmonies for the song.

Sean also became frustrated when Sarah refused to tidy her room in the X Factor house, insisting that her messy surroundings will "clutter her mind".

However, Sarah remained defiant in the face of her brother's badgering, saying: "My mind's not cluttered and why should I tidy [my room]? It's my room! And if I didn't spend all my time cooking, cleaning and washing for you, I would have time to!"