The horses weren't the only ones with thoroughbred legs in Surrey, UK, this weekend: Mischa Barton showed off her winning pair in a mirror-embellished Louis Vuitton dress and a pair of high, high heels at the Cartier International Polo match.
Jessica and Ashlee Simpson
The Simpson girls aired their differences during a sisterly meal at the Ivy in L.A. Jessica wore a glamorous Rozae Nichols dress that she accessorized with a Fendi bag and shoes by Azzedine Alaïa. Ashlee topped off a pair of Lanvin boots with a fashion-forward Katy Rodriquez pinafore dress and a Marc Jacobs purse.
Nicky Hilton channeled a Greek goddess while attending the L.A. launch of Very Sexy makeup by Victoria's Secret. The designer wore a simple white tunic with gladiator sandals and a silvery shoulder bag.
Chloë Sevigny in a printed bubble dress from Myself by Kai Kühne. The actress attended a celebration for the 100th episode of The Best Week Ever on VH1.
Maria Bello gave the classic tuxedo a seductive new spin in a menswear-inspired outfit by MaxMara. The actress was in New York City for the premiere of World Trade Center.
Rachel Bilson looked kissable in a bubble dress by Brian Reyes accented with a lipstick-red belt and a pair of vintage pumps. The actress was attending a listening party for the soundtrack to her upcoming movie, The Last Kiss.
Vanessa Minnillo was sexy in the city as she took a stroll around Manhattan in an off-the-shoulder C&C California top and a pair of denim short-shorts by Anlo. She accessorized her casual look with a pair of Gucci sunglasses and a Dior "Gaucho" bag.
Christina Milian stopped traffic in a siren-red Louis Verdad shirtdress. The singer/actress wore the '40s-inspired satin frock on a visit to MTV's TRL.
Elisha Cuthbert looked fierce on the New York City sidewalks in a leopard-print shirtdress cinched at the waist with a two-tone sash. The actress was in Manhattan to promote her new film, The Quiet.
Paris Hilton sauntered down a Beverly Hills street in a chiffon shirt by Nanette Lepore and a Miss Sixty skirt. She finished off the look with a vintage suede belt, shoes by Betsey Johnson and a Prada purse.
Jessica Biel stood tall in a Catherine Malandrino dress and towering platform sandals. The actress was attending a preview of her latest movie, The Illusionist, held by The Cinema Society in Southampton, New York.
Hilary Duff revealed her dark side in a midnight-hued Empire-waist dress by Yves Saint Laurent. The actress/singer was in New York City for the premiÃ¨re of her new movie Material Girls.
Jessica Biel was a lady in white at the Yari Film Group premiÃ¨re of The Illusionist held at Chelsea West Cinemas in New York City. The actress wore a Guy Laroche gown and carried a clutch by Fendi.
Gwyneth Paltrow was golden outside of Madonna's birthday party in a sheer tie-front shirt and cropped pants. She accessorized the look with a brown leather belt, slingbacks and a clutch bag.
Sarah Jessica Parker
Sarah Jessica Parker was the belle of Broadway in an ivory fifties-style sheath by Peter Soronen, shoes by Christian Louboutin and a Fred Leighton bird brooch. She was attending the premiÃ¨re of Martin Short's new musical, Fame Becomes Me.
Rachel Bilson was a style role model at the Teen Choice Awards. The petite actress was perfection in a Zac Posen "Yacht" dress from his 2006 Resort collection and pointy-toe pumps from Prada.
Charlize Theron was luminous in lace at the Edinburgh International Film Festival's 60th-anniversary party. She lit up the Scottish night in a Guy Laroche frock, Stella McCartney shoes and a Christian Louboutin clutch.
PenÃ©lope Cruz was a regal presence at the Ambassador Theatre in New York City, wearing an asymmetrical lace dress from Chanel and a coronet of braids. The Spanish actress was attending the Broadway dÃ©but of Usher Raymond in Chicago.
Elizabeth Banks brought Old Hollywood glamour to Manhattan in her Dolce & Gabbana corset dress worn with Jimmy Choo shoes and jewelry from Martin Katz. The actress was attending the premiÃ¨re of her new movie Invincible.
Kyra Sedgwick was ethereal at the Emmys in a cloud-like gown from Giorgio Armani PrivÃ©. The star of The Closer kept the look playful with her long, loose waves.
Jaime King was crowned with gold at an Emmy after-party hosted by TV Guide. Her blond Veronica Lake-curls reflected well on her empire-waist Georges Chakra couture gown and Jimmy Choo shoes.
Jessica Simpson brought flower power to Manhattan in a Missoni minidress. She accessorized the retro look with Michael Kors McGraw boots and a ChloÃ© handbag.
Scarlett Johansson wore a soft, seventies look to a photo call for the Venice Film Festival premiÃ¨re of Black Dahlia. The actress complemented her loose Farrah Fawcett waves with a Missoni top and satin shorts from Margaret 's.