FIERY Lady Gaga has rejected Madonnaās offer to end their feud. Madge, 54, invited the star, 26, to end their spat by appearing with her at a concert in New York. But Gaga refused to bury the hatchet, claiming she was too busy touring. Lady Gagaās manager Vincent Herbert said: āMadonna called to ask Gaga to perform with her at the Yankee Stadium. āHer manager reached out to us and said Madonna would like Gaga to perform with her.ā He tried to play down her decision to snub Madonna, adding: āShe said: āIf we do it, letās donate the money to charityā but Gagaās committed to her own tour.ā They have been at loggerheads since Madonna claimed Born This Way was a rip-off of her 1989 hit Express Yourself. Madge then claimed that she āhelped to writeā the Gaga hit. Meanwhile, Gaga is planning to front an album with jazz star Tony Bennett. Bennett, 86, said: āShe called me from New Zealand and said: āI want to do a jazz album with you,ā and I said: āYou got it.āā ...