Leaked Sony emails reveal Lady Gaga is Simon Cowell's Betty Boop

Lady Gaga is to give cartoon character Betty Boop a voice in Simon Cowell's upcoming movie.

The Poker Face singer's links to the project have been revealed in a leaked Sony email posted on the Wikileaks website this week (beg13Apr15).

In the correspondence, Columbia Pictures executive Lauren Abrahams confirms, "Lady Gaga is attached to voice Betty Boop & do some of the music."

Cowell announced plans to make the first Betty Boop film last summer (14).

Gaga's involvement had not been officially confirmed before the leak. Abrahams suggests the film will be an "animated live action hybrid" and admits she is not a big fan of the idea, adding, " Not sure really who it’s for in a big mainstream way", while Columbia Pictures President Doug Belgrad agrees, "It sounds kind of weird to me to be honest. I don't mind if we don't chase it."

Lady Gaga's representatives have yet to comment on the story and a representative for Sony Music has declined to comment on information "stolen in a malicious attack".

The leaked emails posted to Wikileaks are a continuation of the correspondence hacked by cyber terrorists last year (14).