Demi Moore to attend Britain's Got Talent final

(Getty)

Demi Moore is planning on making an appearance at the final of Britain's Got Talent.

She declared her allegiance to Susan Boyle after the Scot's audition, and helped raise the 48-year-old singer's profile by blogging about her on Twitter.

A spokesperson for the show confirmed: "Yes, she's been officially invited by the judges, Amanda and Simon."

Demi was originally asked jokingly by Amanda, who wrote on her Twitter page: "Thank you for the lovely comments about the show, I would love for you and Ashton to come to the live final on Saturday in London!"

And she even offered Simon private jet to bring her over from the States: "By the way B.G.T final is on the 30th, I'll speak to Simon - am sure he will let you borrow his plane."

Demi replied: "Well if he offers the ride...".

Later, Amanda wrote: "Message for Demi!! Please someone get this to her as I am still rubbish at twittering Simon says Yes!! But to first class tickets!!! Xxxxx"

Demi, who has more than a million followers on the site, joked: "what no private plane? lol Generous offer! Thank you! And thank Simon!"

The actress first backed Susan, 48, of Blackburn, west Lothian, after seeing her sing I Dreamed A Dream from Les Miserables during the auditions.

Millions of people around the world have now watched the clip on YouTube and it led to Susan appearing on top US TV chat shows including Oprah and CNN's Larry King.