Stella McCartney

Beyoncé is known for rocking the coolest pieces — especially at basketball games — and we are totally smitten with her latest colorful Stella McCartney letter blouse ($994, originally $1,485) she sported while cheering on the New Jersey Nets in Brooklyn. The singer then styled her quirky topper with slick leather pants, blue suede pumps, and a black leather hobo bag, then tossed on a gold chain-link necklace and a few gold rings for a touch of bling. Score Beyoncé's exact blouse to pair with leather leggings, blue pumps, and a few noteworthy accessories for your next movie date.

Mischa Barton stepped out in London sporting one of the hottest runway and street-style trends: print on print. She styled her dark blue jacquard pants with a floral-print tuxedo blazer and crisp white button-down, then finished off her look with purple printed loafers and a black Stella McCartney crocodile crossbody ($958). Re-create Mischa's mixed-print pairing by working her exact bag with blue jacquard trousers, an orange printed blazer, and ikat print loafers.

Those stories and more in our daily news roundup.

• To celebrate the release of her book, Grace: A Memoir, Grace Coddington will field questions from Vogue's Twitter account (@VogueMagazine) tomorrow, Nov. 20. [WWD]
• The iPad is becoming the key to luxury ecommerce success. [WWD]
• British designer Emma Cook's whimsical collection of apparel and home decor for Topshop will be available Dec. 6. [Elle]
• See by Chloé design director Laure de Sade has left the company. It is not known what her next move will be. [Vogue UK]
• Chris Burch, founder and CEO of Burch Creative Capital, has announced that he is slowing down the development of two nascent brands to focus on growing his other labels, C. Wonder and Monika Chiang. [WWD]
• Stella McCartney has designed a White Ribbon badge to run during a two-week campaign for the International Day for the Elimination of Violence Against Women on Nov. 25. [Vogue UK]
• Hugo Guinness says that humor is his main source of inspiration for his artwork, which is currently being featured in a line of accessories for Coach. [FashionEtc]
• Anna Karenina costume designer Jacqueline Durran says 1950s couture inspired the movie's costumes because it has "a stark, architectural approach which doesn't involve a lot of surface detail but at the same time captures a kind of romanticism." [Fashionista]
• The Maison Martin Margiela for H&M collection hasn't sold out yet. [Racked]
• Jordi Constans is the new CEO of Louis Vuitton, replacing Yves Carcelle. [WWD]
• Vanessa Steward's second capsule collection for A.P.C. will expand into the company's bread and butter: denim. [Style.com]
• Iris Apfel's personal style mantra is "more is more and less is a bore!" [Fashionista]

Dianna Agron styled a Fall-friendly ensemble with chic pink Stella McCartney shades ($225) while shopping with a friend in LA. The blond beauty donned a pin-striped button-down, black denim, and brown buckled ankle boots, then layered on a polished camel coat to combat the Autumn breeze. Although the actress's neutral look was cute on its own, what really caught our eye was her unexpected accessories — blue patent leather bag, a hammered gold ring, and rosy shades. Take a cue from Dianna and make your closet staples pop with her exact sunglasses, a blue patent leather crossbody, and a few tough jewels.

Jennifer Lopez was spotted out and about in Turkey looking preppy chic in this Stella McCartney argyle turtleneck ($865). She finished her overseas ensemble with black skinny jeans, gray suede boots, silver hoop earrings, and signature oversize square sunglasses. Re-create Jennifer's latest look by scoring her exact top, then pairing it with black jeans, gray boots, and silver hoops. If her sweater is too steep for your wallet, shop more argyle sweaters at ShopStyle.

Miranda Kerr stepped out on the streets of Manhattan working the perfect daytime Fall look with noteworthy accessories — a new tan suede Burberry barrel bag ($2,495) and two-tone Stella McCartney shades ($318). For her clothes, the model went denim-on-denim with a chambray top and high-waisted skinny jeans, then added this bouclé Isabel Marant coat ($1,115) for extra warmth, leopard driving loafers for a pop of print, and this Pearl Collective pendant ($580) for a dash of sparkle. Score Miranda's exact coat, bag, and sunglasses to pair with your favorite chambray top and denim, then slip on a pair of leopard flats to nail her effortlessly chic ensemble.

Pippa Middleton has been doing it up big in London promoting her very first book, a party-planning tome titled Celebrate: A Year of Festivities For Families and Friends. While her sister, Kate, didn't show, Pippa spent all of Thursday on the press run at Daunt Books in Chelsea, and looked seriously stylish while doing it. She ran the gamut in a handful of cute looks by designers like Roksanda Ilincic and Markus Lupfer, then finished up her day in Stella McCartney's Mixed-Fabric Sheath Dress ($2,485). While simple, Pippa's look still made a statement — it's a chic workwear look that also manages to look great in a celebratory setting. We think her big sister, the duchess, would definitely approve.