Lady Gaga say she is "so grateful" of winning another Grammy.

The singer and jazz collaborator Tony Bennett bagged the Traditional Pop Vocal Album award at Sunday's (February 8) ceremony.

They picked up the prize for their 2014 covers album 'Cheek to Cheek'.

Speaking on Twitter after the win, Gaga wrote:

"We WON! @itstonybennett & I are so grateful to win this Grammy together! Thank you to our fans! Benedettos, lil' monsters & @theGrammys!

"I can't believe it WOW this is my 6th Grammy!! I could never do this without amazing fans, always stay true to yourself I love you so much!"

Gaga has now won six Grammy Awards, with her first coming in 2010.

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Watch Lady Gaga and Tony Bennett perform at the Grammys below: