Lady Gaga and Tony Bennett will perform together at the 2015 Grammy Awards.

The Bad Romance singer made the announcement on Twitter.

"Me and @itstonybennett are so excited to announce we will be performing at #TheGrammys this year! Thank you to @TheGRAMMYs and our fans," she wrote.

She added in a later tweet: "I'm humbled to be nominated&performing @TheGRAMMYs w an incredible man. Honouring a legend, I stand proudly behind him."

Gaga and Bennett released their album of duets Cheek to Cheek back in September 2014, with the record reaching number ten in the UK and number one in the US.

The record is nominated for Best Traditional Pop Vocal Album at this year's Grammy Awards, which will be held on February 8 at the Staples Center in Los Angeles.

Madonna, John Legend, Miranda Lambert, Usher, Sam Smith, Pharrell Williams, AC/DC, Ariana Grande and Ed Sheeran will also perform at this year's event.