Rihanna Goes Full Futuristic Princess, While Cara Delevingne Rocks Sheer Dress at 'Valerian' Premiere

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Out of this world!

The stars came out for the Valerian premiere on Monday night in Hollywood, and they certainly didn't play it safe in the fashion department.

WATCH: Rihanna Shares a Behind-the-Scenes Look at 'Valerian' and Her Sexy Alien Character

Rihanna stole the show in her blush-colored Giambattista Valli edgy princess gown which had a short front and a lengthy train with puffy sleeves. She paired the bold look with matching Manolo Blahnik heels that laced up to her knees.

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The 29-year-old singer chatted with pal and co-star Cara Delevingne on the red carpet. The supermodel rocked a futuristic sheer metallic Iris van Herpen gown and gave her cropped platinum blonde pixie cut a flapper wave.

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WATCH: Cara Delevingne and Kendall Jenner React to New 'Valerian and the City of a Thousand Planets' Trailer

Delevingne, 24, got some celebrity support from her friend, Kendall Jenner, who showed off her stems in a black Djula mini-dress.

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Valerian hits theaters on July 21. To see a clip of Rihanna's sexy alien character, Bubble, watch the clip below!

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