Beyonce will reportedly perform with Zac Efron AND Vanessa Hudgens at the Oscars this Sunday in a musical extravaganza directed by Baz Luhrmann.

The camp spectacle will- according to E! Online- also include singing from host Hugh Jackman and Mamma Mia stars (and real life couple) Dominic Cooper and Amanda Siegfried.

This year Oscars organisers are sexing up the ceremony in a bid to curb falling TV viewing figures.

Best song nominees have been told to limit their performances to 65 seconds- which caused Peter Gabriel to pull out.

Rehearsals are currently taking place in LA before the Academy Awards on Sunday. British hopes rest on Kate Winslet- who is up for Best Actress- and Slumdog Millionaire which is nominated for 10 awards.