Sarah Michelle Gellar and Shannen Doherty have impressively maintained their close friendship since meeting in the nineties while shooting their respective shows on The WB, Buffy the Vampire Slayer and Charmed.Whether they're performing viral #winechallenges or supporting each other through health battles, the 43-year-old blonde and the 49-year-old brunette still 'talk every day.'Sarah gushed of Shannen - who's battling Stage IV breast cancer - to People on Thursday: 'She's amazing!' BFFs: Sarah Michelle Gellar (L) and Shannen Doherty (R) have impressively maintained their close friendship since meeting in the nineties while shooting their respective shows on The WB, Buffy the Vampire Slayer and Charmed (pictured in 1999)Surprisingly,.
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