Renee Zellweger @ 'Leatherheads' Premiere

Renee Zellweger arrives at the world premiere of Leatherheads in Los Angeles on Monday.

Renee, 38, stars as sassy newspaperwoman Lexie Littleton alongside John Krasinski‘s character, Carter Rutherford.

Krasinski, 28, shared about how his Oscar-winning co-star welcomed and calmed him down when he first arrived on set.

“On my first day filming, I was terrified. Renee immediately saw that and she calmed me down by getting me to talk – because I wasn’t breathing very well,” Krasinski said. “They always remember their first day and that’s what makes them great stars.”

50+ pics of Renee and her co-stars arriving at the premiere…