Lady Gaga thought Isla Fisher was Amy Adams, but the actor was too much in awe of the singer to correct her.
The "Bad Romance" hitmaker mistook the "Confessions of a Shopaholic" star for Adams when they met at a star-studded Hollywood bash, reported Billboard.
"I remember one time I was at this fancy Hollywood party. And I was there, excited, all dressed up, at the bar and schmoozing with showbiz types. And the crowds parted and there was Lady Gaga and she's heading right towards me. And she says, 'Thank you, your performance in 'American Hustle', Amy, was amazing.'
"And I'm thinking, 'Oh my gosh, it's Lady Gaga I love her so much I don't want to tell her the truth.'," Fisher said.