Red Carpet Roundup: Pamela Anderson and Alessandra Ambrosio sparkle during Paris Fashion Week

From Paris to New York and even Los Angeles, the red carpet sightings were aplenty this week!

Pamela Anderson arrived at the L'Oreal Paris x Balmain in a sparkly mini dress that showed off her enviable figure, while Victoria's Secret model Alessandra Ambrosio also dazzled in a striking look of her own.

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Red Carpet Roundup: Week of September 25
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Red Carpet Roundup: Week of September 25

Penelope Cruz attended 'Loving Pablo' photocall during 65th San Sebastian Film Festival in a dazzling nude gown with a sexy, thigh-high slit. 

(Getty)

Pamela Anderson show off her sensational figure in a sparkly Balmain mini dress at the L'Oreal Paris x Balmain Paris Fashion Week event.

(Getty)

Fashion designer Nicky Hilton Rothschild attended the New York City Ballet's 2017 Fall Fashion Gala in a striking red Oscar de la Renta gown that showed off her baby bump.

(Getty)

Lady of the hour! Actress and NYCB Board Vice Chair Sarah Jessica Parker attended the New York City Ballet's 2017 Fall Fashion Gala in a midnight blue gown from Monse. 

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Gorgeous! Malin Akerman dazzled in a red patterned frock for the New York City Ballet's 2017 Fall Fashion Gala.

(Getty)

Keri Russell showed off her enviable stems in a dramatic, one-shoulder LBD at the New York City Ballet's 2017 Fall Fashion Gala.

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Michelle Monaghan stood out from the pack in a blue-and-green gown with a sexy thigh-high slit at the New York City Ballet's 2017 Fall Fashion Gala.

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Alessandra Ambrosio sparkled in Balmain at the L'Oreal Paris X Balmain event during Paris Fashion Week.

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Pretty in pink! Gabrielle Union promoted her new 'Flawless' line at Ulta in a plunging pink midi dress that showed off her toned arms.

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Nelly Furtado looked stunning at the inaugural 'Monte-Carlo Gala For The Global Ocean' in a sleeveless powder blue gown with sequins peppered throughout the look.

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Tara Reid flaunted her tiny frame in a see-through black top and some flattering leggings at the Men's Fitness 2017 Game Changers event.

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Uzo Aduba showed off her curvaceous figure in a floral frock from Shoshanna for the 'My Little Pony: The Movie' screening in New York City.

(Getty)

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A slew of stars -- from Sarah Jessica Parker to Nicky Hilton -- put on their best dancing shoes for New York City Ballet's annual fall gala. Parker stunned in a midnight blue Monse gown complete with an eye-catching shredded skirt alongside beau Matthew Broderick. Meanwhile, Hilton showed off her baby bump in an bright red strapless gown.

Nelly Furtado, Gabrielle Union and Tara Reid also lit up the red carpet in their respective ensembles. For the best red carpet looks of the week, check out the slideshow above!

RELATED: Celebs spotted out and about this week:

30 PHOTOS
Celeb Spotter 035: Gigi and Bella Hadid in Paris, J.Rod with their kids
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Celeb Spotter 035: Gigi and Bella Hadid in Paris, J.Rod with their kids

Bella Hadid narrowly avoided a wardrobe malfunction while out and about during Paris Fashion Week.

(Photo by Mehdi Taamallah/NurPhoto via Getty Images)

J.Lo and Alex Rodriguez were spotted leaving ABC Kitchen in NYC with J.Lo's twins, Emme and Max. (Photo by Raymond Hall/GC Images)

Catherine Zeta-Jones looked absolutely gorgeous in a figure-hugging pink dress in NYC.

(Photo by James Devaney/GC Images)

Model Karlie Kloss flashed her undergarments in a sheer skirt while out in Paris.

(Photo by Marc Piasecki/GC Images)

Nicole Richie looked like a total star while making the promo rounds in New York City.

(Photo by Raymond Hall/GC Images)

Harrison Ford kept it cool during an appearance at AOL Build this week.

(Photo by VMAL/Star Max/GC Images)

Whatcha lookin' at?! Kourtney Kardashian and Younes Bendjima were spotted leaving their hotel together in Paris. (Photo by Pierre Suu/GC Images)

Emily Ratajkowski toasted InStyle Editor in Chief Laura Brown and designer Justin O'Shea's with Grey Goose at the Chez Away dinner during Paris Fashion Week.

(Credit: Kelly Taub/BFA.com)

Selena Gomez went braless in a mustard-yellow top in NYC.

(Photo by Josiah Kamau/BuzzFoto via Getty Images)

Gigi Hadid was a total vision in a plunging white ensemble with a major slit up the middle, which she wore to a launch party during Paris Fashion Week.

(Photo by Pierre Suu/Getty Images)

Kourtney Kardashian rolled her eyes while making her way through the crowd in Paris.

(Photo by Marc Piasecki/GC Images)

Karlie Kloss took a break from Paris Fashion Week to get a quick jog in.

(Photo by Jacopo Raule/GC Images )

Lorde snapped a selfie with a fan in London.

(Photo by Neil Mockford/GC Images)

Karlie Kloss was stunning in a black ensemble for an event during Paris Fashion Week.

(Photo by Pierre Suu/Getty Images)

Sofia Vergara looked stunning in an off-the-shoulder dress while making the rounds during a promo tour in NYC.

(Photo by Josiah Kamau/BuzzFoto via Getty Images)

Ashley Graham was spotted out and about in NYC.

(Photo by Josiah Kamau/BuzzFoto via Getty Images)

Nicole Richie looked like a total goddess out promoting her NBC sitcom "Great News."

(Photo by Josiah Kamau/BuzzFoto via Getty Images)

Viola Davis flashed her incredible smile as she walked into "GMA" wearing some incredible, gold platform shoes.

(Photo by Ray Tamarra/GC Images)

Elle Fanning braved the rain while filming her upcoming Woody Allen movie.

(Photo by Alessio Botticelli/GC Images)

Kyra Sedgwick stopped by AOL Build this week in a pretty, pink tea-length dress.

(Photo by VMAL/Star Max/GC Images)

Hailey Baldwin turned heads while out and about during Paris Fashion Week this week.

(Photo by Timur Emek/Getty Images)

Emily Ratajkowski looked beautiful in a unique white top, jeans and knee-high red boots.

(Photo by Timur Emek/Getty Images)

Hailey Baldwin rocked green pants with strategically-placed slits while out and about for Paris Fashion Week.

(Photo by Timur Emek/Getty Images)

Sarah Jessica Parker was all smiles out and about in New York City. (Photo by UMV/Star Max/GC Images)
Liv Tyler and David Gardner was spotted leaving an event together in London. (Photo by Mark R. Milan/GC Images)

Sofia Vergara was a bombshell in a LBD at "The Late Show."

(Photo by Raymond Hall/GC Images)

Goldie Hawn kept it casual in an all-black workout ensemble at LAX.

(Photo by BG022/Bauer-Griffin/GC Images)

Model Kaia Gerber was totally chic in a black-and-red getup during Paris Fashion Week.

(Photo by Mehdi Taamallah/NurPhoto via Getty Images)

Demi Lovato was stunning in a LBD at a party in London.

(Photo by Neil Mockford/GC Images)

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