Helen Mirren, Naomie Harris and more stars stun on the red carpet at the 'Collateral Beauty' London premiere

The biggest stars of new film "Collateral Beauty" stepped out on Thursday night for the movie's glamorous London premiere, and they all looked incredible.

Helen Mirren, Will Smith, Naomie Harris and Edward Norton were just some of the massive names that took to the red carpet in Mirren's hometown.

SEE ALSO: Jennifer Lawrence, Chris Pratt and more stars light up the 'Passengers' premiere red carpet

The stunning 71-year-old actress had the most memorable look of the night, donning a form-fitting crimson dress with long, lace sleeves. Mirren cozied up to her husband, Tayler Hackford, on the red carpet while showing off a sexy surprise on the backside of her gown: A knee-high slit that showed off her edgy black booties.

Naomie Harris rocked a unique, calf-length white and burnt orange dress with floral embellishments all over. She finished the look with simple white heels.

Check out all of the red carpet looks below:

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