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.

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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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'Collateral Beauty' London premiere: Red carpet arrivals
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'Collateral Beauty' London premiere: Red carpet arrivals
LONDON, ENGLAND - DECEMBER 15: Dame Helen Mirren attends the European Premiere of 'Collateral Beauty' at Vue Leicester Square on December 15, 2016 in London, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
LONDON, ENGLAND - DECEMBER 15: Dame Helen Mirren attends the European Premiere of 'Collateral Beauty' at Vue Leicester Square on December 15, 2016 in London, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
LONDON, ENGLAND - DECEMBER 15: Dame Helen Mirren and Taylor Hackford attend the European Premiere of 'Collateral Beauty' at Vue Leicester Square on December 15, 2016 in London, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
LONDON, ENGLAND - DECEMBER 15: Will Smith attends the European Premiere of 'Collateral Beauty' at Vue Leicester Square on December 15, 2016 in London, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
LONDON, ENGLAND - DECEMBER 15: (L-R) Shauna Robertson and Edward Norton attend the European Premiere of 'Collateral Beauty' at Vue Leicester Square on December 15, 2016 in London, England. (Photo by Jeff Spicer/Getty Images)
LONDON, ENGLAND - DECEMBER 15: Naomi Harris attnds the European Premiere of 'Collateral Beauty' at Vue Leicester Square on December 15, 2016 in London, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
LONDON, ENGLAND - DECEMBER 15: Sam Harwood attends the European Premiere of 'Collateral Beauty' at Vue Leicester Square on December 15, 2016 in London, England. (Photo by Karwai Tang/WireImage)
LONDON, ENGLAND - DECEMBER 15: Aj Odudu attends the European Premiere of 'Collateral Beauty' at Vue Leicester Square on December 15, 2016 in London, England. (Photo by Jeff Spicer/Getty Images)
LONDON, ENGLAND - DECEMBER 15: Aaron Ramsey (L) and wife Colleen Rowlands attend the European Premiere of 'Collateral Beauty' at Vue Leicester Square on December 15, 2016 in London, England. (Photo by Jeff Spicer/Getty Images)
LONDON, ENGLAND - DECEMBER 15: Kimberley Garner attends the European Premiere of 'Collateral Beauty' at Vue Leicester Square on December 15, 2016 in London, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
LONDON, ENGLAND - DECEMBER 15: Eliza Fairbanks attends the European Premiere of 'Collateral Beauty' at Vue Leicester Square on December 15, 2016 in London, England. (Photo by Jeff Spicer/Getty Images)
LONDON, ENGLAND - DECEMBER 15: (L-R) Matt Hermer and Marissa Hermer attend the European Premiere of 'Collateral Beauty' at Vue Leicester Square on December 15, 2016 in London, England. (Photo by Jeff Spicer/Getty Images)
LONDON, ENGLAND - DECEMBER 15: Olivia Buckland attends the European Premiere of 'Collateral Beauty' at Vue Leicester Square on December 15, 2016 in London, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
LONDON, ENGLAND - DECEMBER 15: Fran Newman attends the European Premiere of 'Collateral Beauty' at Vue Leicester Square on December 15, 2016 in London, England. (Photo by Jeff Spicer/Getty Images)
LONDON, ENGLAND - DECEMBER 15: Marissa Montgomery attends the European Premiere of 'Collateral Beauty' at Vue Leicester Square on December 15, 2016 in London, England. (Photo by David M. Benett/Dave Benett/WireImage)
LONDON, ENGLAND - DECEMBER 15: Anthony Bregman attends the European Premiere of 'Collateral Beauty' at Vue Leicester Square on December 15, 2016 in London, England. (Photo by Jeff Spicer/Getty Images)
LONDON, ENGLAND - DECEMBER 15: Sarah Jane Crawford attends the European Premiere of 'Collateral Beauty' at Vue Leicester Square on December 15, 2016 in London, England. (Photo by Jeff Spicer/Getty Images)
LONDON, ENGLAND - DECEMBER 15: Lily Hevesh attends the European Premiere of 'Collateral Beauty' at Vue Leicester Square on December 15, 2016 in London, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
LONDON, ENGLAND - DECEMBER 15: Jacob Latimore attends the European Premiere of 'Collateral Beauty' at Vue Leicester Square on December 15, 2016 in London, England. (Photo by Jeff Spicer/Getty Images)
LONDON, ENGLAND - DECEMBER 15: (L-R) Olivia Buckland and Alex Bowen attend the European Premiere of 'Collateral Beauty' at Vue Leicester Square on December 15, 2016 in London, England. (Photo by Jeff Spicer/Getty Images)
LONDON, ENGLAND - DECEMBER 15: Helen Mirren, Will Smith, Naomie Harris and Edward Norton attend the European Premiere of 'Collateral Beauty' at Vue Leicester Square on December 15, 2016 in London, England. (Photo by Dave J Hogan/Getty Images)
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