Sarah Michelle Gellar Gushes Over Britney Spears After Slamming ‘Cheesy’ Biopic

Back in the ’90s, Sarah Michelle Gellar, 39, was slaying vampires while Britney Spears, 35, was slaying the charts. So when SMG saw her fellow ’90s icon being portrayed in a rather silly way in the Lifetime biopic Britney Ever After she was definitely in a unique position to throw down with the network.

The Buffy the Vampire Slayer star watched the TV movie when it premiered on Feb. 18 and live tweeted the whole thing, throwing out some absolutely…