Sexy Stars: Kate Middleton, Halle Berry and Britney Spears stun this week

The fashion game hit a high note this week!

Duchess of Cambridge Kate Middleton started off the week with multiple looks that turned heads during her royal tour of Canada. Her biggest standout look was definitely a bright red Preen gown with off-the-shoulder straps. Kate, who normally covers up for royal appearances, finally let her guard down in this pretty number and we couldn't get enough of it.

Sexy Stars: Week of September 25
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Sexy Stars: Week of September 25

Wowza! Goldie Hawn, 70, was a total knockout in a  LBD with a plunging neckline and a keyhole detail. The dress was super sexy for a night on the town in London celebrating the new site for Annabel's.Talk about defying age!

(Photo by David M. Benett/Dave Benett/Getty Images for Annabel's)

Britney Spears turned heads in London when she brought the 1970s back in a set of thigh-high boots and a mod floral dress. She polished off the groovy look with a hat and sunglasses. 

(Photo by Neil Mockford/GC Images)

The Duchess of Cambridge has been putting on a stylish display throughout her tour of Canada, but we adore this sophisticated wool jacket in a vibrant emerald green. The jewel tone and polished lapel details make this trench a must-have. 

 (Photo by Samir Hussein/WireImage)

Nicole Kidman dazzled in a sparkling dress with starry designs. (Photo by VCG/VCG via Getty Images)

Kate Middleton was red hot in this Preen dress with a sexy off-the-shoulder silhouette and a tea-length hemline.  The dress was just the right amount of va va voom and sophisticated. (Photo by Pool/Sam Hussein/WireImage)

Hilary Duff brought a touch of spunky and cool to the AOL BUILD stage in this striped shirt and colorful skirt. 

(Photo by Astrid Stawiarz/Getty Images)

Amanda Peet kicked her LBD a notch with some ruffled details in order to attend the LA Philharmonic's Opening Night.

(Photo by Allen Berezovsky/FilmMagic for Fashion Media )

Halle Berry was all wrapped up this pink and black bodycon dress. She finished off the sexy style with a ballet bun and a set of heels. 

(Photo by Jon Kopaloff/FilmMagic)

Mandy Moore has been earning solid points for her performance on her new hit TV show, "This Is Us," and she also got a big nod from us for rocking this gorgeous pink dress with cutout details. 

(Photo by: Lloyd Bishop/NBC/NBCU Photo Bank via Getty Images)

Chrissy Teigen opted for a flashy look in a sheer black top and a brown suede skirt with a thigh-high slit. The look seemed perfect for fall. (Photo by Robert Kamau/GC Images)

She's the bell of the ball!  Miranda Kerr hit the Koradior show at Milan Fashion Week in a pretty, blush gown with sparkling pleats. She added a touch of glam with a bold diamond choker. 

(Photo by Jacopo Raule/Getty Images)

Alexa PenaVega showed off her growing baby bump in a sweet polka-dot dress and heels. 

(Photo by Tibrina Hobson/Getty Images)

"So You Think You Can Dance" host Cat Deeley put on a leggy display in a white dress with a diamond necklace. The best part of the look, though? Her huge, bouncing curls! (Photo by Steve Granitz/WireImage)

Who says Kate Middleton should get all the attention?  HRH Princess Mary of Denmark looked breathtaking this week in a strapless gown with an ikat pattern as she arrived at the Smithsonian's Arts and Industry building for a Gala Ball, to celebrate the U.S. Denmark Trade Mission. (Photo by Riccardo S. Savi/Getty Images)

Actress January Jones looked pretty as can be in a monochromatic style at AOL BUILD. (Photo by Monica Schipper/WireImage)

Britney Spears also grabbed our attention during an outing in London. The "Toxic" singer put on a groovy display in a 1970s-themed outfit with thigh-high boots, a floppy hat, and a mod dress with tons of flower power.

Halle Berry took a different route to land on the sexy list and donned a curve-hugging bodycon dress. Make no mistake, Halle Berry looks as good 10 years ago as she does today and she showed off her sleek physique in a pink and black number.

Check out all the sexy styles above!

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