Amanda Bynes -- Denies Trampoline Trip, But Witnesses Say ... It Was Her!

Amanda Bynes is ADAMANT ... photos taken at a trampoline facility last night in Buffalo, NY are NOT her -- but multiple witnesses think the woman DEFINITELY was the alleged bong-chucker.It's pretty bizarre ... pics surfaced of Amanda wearing a brown…

Sarah Shahi Sarah Silverman Sarah Wynter Scarlett Chorvat