"I had to speak Spanish in the movie," Witherspoon explained. "She wasn't even nice about it. She's like, 'This is terrible! You sound terrible!'"
"I finally understand why I am so funny to the Americans," the Modern Family star, 42, quipped of her thick Colombian accent.
Vergara wasn't the only one with a funny soundbite this week. Avengers actor Chris Hemsworth opened up about the terrors of traveling with his newborn twin sons Tristan and Sasha.
Watch our latest Us Weekly Loose Talk video series now to see what he had to say!