Sophie Hiller performs a version of the Justin Bieber track Baby.

The singer's career has hit the big time this week, as she performed at the MGM Grand in Las Vegas as Sir Tom Jones’ warm-up act.

The 20-year-old, from East Barnet, north London, was invited to audition for the job after a producer of the Welshman’s show saw a clip of her on YouTube.

She describes her style as “jazzy, souly and funky with a modern twist”.

But Sophie’s two-week stint in the entertainment capital is not all hard work. On Monday she wrote on Twitter: “Just laying by the pool bronzing myself. All in a days work, eh?”

She prepared for the Vegas trip by performing at the Red Cross charity ball, in Monte Carlo, last month.

Read about Tom Jones' suprising Jewish past here.