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The 'Judas' star serenades the crooner for his 85th celebrations.
Lady Gaga has made a special video for old-school singer Tony Bennett for his 85th birthday.
Gaga recorded the personalised performance and in the vid gives him a gift of a lipstick-stained glass filled with his favourite tipple.
The pair recently hooked up for Tony's new duet album, which Mother Monster features on singing 'The Lady Is A Tramp'.
Watch the singer's pitch-perfect birthday song for Tony below...