Katy Perry, Zendaya & More Stun at Paris Haute Couture Fashion Week -- See the Best Style & Beauty Trends!

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Paris Haute Couture Fashion Week is officially here, and once again, the celebrity guests did not disappoint.

From hot hair hues to quirky ensembles, ET's rounded up the most memorable looks from the females who went all out for their fashionable trip to France.

WATCH: Bella Hadid Rocks a Totally See-Through Black Top at Paris Haute Couture Fashion Week

Katy Perry steals the show in a totally out-there ensemble.

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Her perfect pixie cut, those metallic stilettos, the spaceman-printed two piece… the "Swish Swish" singer undoubtedly turned heads at the Chanel runway show, and for all the right reasons.

Lily Collins' bright eyeshadow is the summer beauty product we didn't know we needed.

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New obsession alert! It's always risky to go bold with vibrant eyeshadow shades, but after seeing the actress sport this trend, we now know it's possible to pull off. Collins left the eyeliner at home, using only mascara on her lashes and lavender shadow over her lids to create a refreshing winged look. Her light pink lip gloss topped it off perfectly.

Kendall Jenner and Cara Delevingne give 'legs for days' new meaning.

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Sexy and chic! The supermodels highlighted their slender, toned legs in body-hugging mini dresses and pumps at Vogue's Foundation Dinner. The girls proved once and for all that this stylish combo is the perfect way to show off those bronzed limbs for summer.

Karlie Kloss goes platinum…

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New month, new 'do! Moments before the Christian Dior runway show, the model debuted her bleach blond tresses on the red carpet, complete with a dash of bronzer, light eye makeup and a striking red lip, seemingly channeling her inner Gwen Stefani.

…while Bella Hadid goes gold!

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All eyes were on the model's glistening hairstyle as she strutted her stuff on the Maison Margiela runway. Although she's previously claimed she'd never go full-on blonde, we gotta admit it -- she looks good as a golden goddess.

Zendaya's summer glow shines day and night.

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Leave it to Z to slay two completely different beauty looks less than 24 hours apart! The fashionista rocked a DIY top knot and minimal makeup for Viktor and Wolf's fashion show, giving off that gorgeous bronzed glow we all aim for during the summer. She rocked a more dramatic take on the beauty look for the Ralph & Russo show, sporting slicked back, wet hair and a fierce smokey eye.

See more highlights in the video below!

WATCH: Cara Delevingne and Katy Perry Are Twinning in Paris 1 Year After Model Attended Taylor Swift’s July 4th Bash