Singer also reveals special New Year's Eve announcement

Lady Gaga‘s ‘The Fame Monster’ has become the biggest selling album of 2010.

The album, which is an extended version of her 2008 debut ‘The Fame’, clocked up nearly six million sales worldwide over the last year.

The singer finished ahead of Eminem in second who scored 5.7 million album sales with ‘Recovery’.

“‘The Fame Monster’ was named the best-selling album of 2010!” she wrote on her Twitter page “I’m so excited for the future, believe + work hard, you will achieve your dreams.”

Gaga also revealed that she plans to make a special announcement about her forthcoming second album ‘Born This Way’ at midnight on New Year’s Eve (December 31).

Earlier this year Gaga came top of Spotify’s most listened-to tracks and albums of 2010 lists.