It’s another show-stopping performance! Susan Boyle’s lifelong dream came true as she joined her idol, Elaine Paige, for a breathtaking duet of ‘I Know Him So Well.’ Their powerful, emotional rendition left the audience spellbound, proving that dreams really do come true.

As if a hit album and worldwide adoration weren’t enough – Susan Boyle has achieved her dream of singing with her musical idol.

The Scottish singer, 48, looked overcome with joy as she teamed up with Elaine Paige to sing the latter’s hit duet I Know Him So Well.

The pairing was kept secret from Miss Boyle until shortly before the performance, which was for a TV special that charts her rise to fame this year.

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Afterwards, the Britain’s Got Talent runner-up said: ‘I never thought I would see myself standing on the same stage with such an icon from West End theatre, let alone singing with her as an equal.’

Miss Paige added: ‘It was a pleasure to finally sing with Susan, she was a delight to work with and I think we more than did justice to one of my favourite songs.’

The Scottish singer has previously admitted singing along to Paige’s music, alone, in front of her bedroom mirror, equipped with a hairbrush for a microphone.

How far she’s come: Susan Boyle in April, left, at her Britain’s Got Talent audition, and yesterday, right, looking polished on her TV special

When she first auditioned for Britain’s Got Talent, the judges asked what her dream was, and answered that she wanted to sing like Elaine Paige.

But Miss Boyle, nicknamed SuBo, also showed her mischievous side on her hour-long special.

During her ballad Who I Was Born To Be, she wheeled away from the microphone, threw her arms around and jigged across the stage to cheers from the audience.

And when producers asked her to film the song a second time, she did the same thing again.

Miss Boyle has sold three million copies of her debut album worldwide and could top 4.5million in the next week.