The singer tweeted this afternoon to confirm she willperform at the awards on February 13 - where she is expected to debut her new single `Born This Way`.
Although it has been strongly rumoured she would appear for some time, Gaga`s choreographer let the secret slip by tweeting: "Grammy meeting performance extrodinaire!!! (sic)"
When asked whether it was true she will appear by fans, Gaga responded simply by tweeting "yes".
Gaga opened the Grammyawards last year, giving a show stopping performance which saw her and Elton John duet together.
Meanwhile Britney Spears - who premiered her new single `Hold It Against Me` this week - is also expected to perform at the event, held at Los Angeles` Staples Center, though a source has said her team are "keeping the plans under wraps" so she surprises her fans at the event.