The 26-year-old 'Bad Romance' singer wore the gold headgear, complete with gold chains, over her platinum blonde hair which she teamed with a biker jacket, black trousers and platform boots.
GaGa sang 'Gimme Shelter' on stage with the Rolling Stones during their 'One More Shot' concert at the Prudential Centre, tweeting: "Me with the boys. When rock n' roll gets you wet in 6. PAY PER VIEW "One More Shot" Tomorrow night 9PM Eastern."
She later shared a picture of her performing on stage in a black and gold jumpsuit, adding: "Thanku for my beautiful suit @RayBrownFashion the stretch velvet combinations summoned the glam gods I felt like a star."
GaGa's creative director Nicola Formichetti recently admitted he "regrets" some of the performer's outfits, explaining: "[I regretted] some of GaGa's looks. But she works it... mostly."
Speaking about the infamous meat dress that GaGa wore to the MTV VMAs, he added: "We came up with the idea together. Originally I made her a meat bikini for a Vogue Hommes Japan cover shoot with Terry Richardson, then it became a red carpet version. The meat was bought in a local LA butcher - I think it was Argentinian."