At last night’s 43rd annual Country Music Association Awards, hosted by Brad Paisley and Carrie Underwood, Taylor Swift became the youngest person ever to win Entertainer of the Year. The Nashville songstress, who looked gorgeous in a glittery gown by Reem Acra, poked fun at Kanye West’s VMA outburst, telling the crowd, “I want to thank every single person in this room tonight for not running up on the stage during this speech.”

The Twilight Saga: New Moon hits theaters next week, and Robert, Taylor, and Co. have embarked on their worldwide press tour. While promoting the vampire flick in Paris yesterday Kristen Stewart looked anything but goth in an ultrafeminine chiffon frock by J. Mendel, eschewing Converse kicks for beige Sergio Rossi pumps.

Jennifer Aniston, Demi Moore, Ashton Kutcher, John Krasinski, and other boldface actors lent their talents to The24 Hour Plays on Broadway last night, to benefit the Urban Arts Partnership. At the show’s after-party, Krasinski, recently engaged to ELLE Women in Hollywood honoree Emily Blunt, looked casual-cool in a monochrome black ensemble. (The Office star is currently promoting his new film Brief Interviews With Hideous Men, based on David Foster Wallace’s short-story collection of the same name).

Beyonce won big at last night’s European Music Awards, held at Berlin’s O2 Arena, nabbing awards for Best Song (“Halo”), Best Video (“Single Ladies”), and Best Female Artist. Sasha Fierce also scored a trifecta of fashion hits, wowing the crowd in the sexy red leotard she wore onstage, the embellished David Koma number recently seen on the X Factor’s Cheryl Cole, and this shimmering gown by Atelier Versace.

The MTV European Music Awards descended on Berlin today, marking the 20th anniversary of the fall of the Berlin Wall with a Cabaret-inspired show. Lady Gaga and Kings of Leon lead the list of honored artists, with five nominees each. Katy Perry was the event’s emcee, while Fall Out Boy front man Pete Wentz, looking rock-chic in all black, served as digital host.

Just two months after her British beau Russell Brand emceed the VMAs, Katy Perry is serving as host of tomorrow’s European Music Awards. The sassy songstress appeared at a Berlin press conference in a frothy pastel chiffon-and-feather frock by Jenny Packham, making us ponder her sartorial choices for the big event. Perhaps she’ll wear this metallic number from Karl Lagerfeld’s spring 2010 collection, as she suggested to the designer at his Paris show last month.

New York’s Solomon R.Guggenheim Museum held its first annual Art Awards last night and style-savvy guests included Cynthia Rowley and Julianne Moore, among others—but we couldn’t get Kylie Minogue’s dress out of our heads. The Aussie songstress proved that neutrals can make a strong statement in an elegant beige number from Calvin Klein's spring 2010 collection.

The Avon Foundation for Women held its ninth annual gala at Cipriani 42nd Street, featuring presenters such as Courteney Cox, Patrick Dempsey, and Lauren Conrad. Reese Witherspoon, the evening’s co-host, took top fashion honors, in a strapless black-and-white silk and patent-leather Narciso Rodriguez number from the designer's spring 2010 collection.

Chloe, a thriller about marital infidelity, premiered at the BFI London Film Festival Thursday night, and star Julianne Moore stunned on the red carpet in a strapless crimson Bottega Veneta gown. Moore was one of the leading ladies featured in ELLE’s November Women in Hollywood issue.

Sienna Miller just made her Broadway debut in After Miss Julie, Patrick Marber’s adaptation of August Strindberg’s 19th-century play about class, seduction, and the battle of the sexes, which debuted last night at the Roundabout Theatre Company’s American Airlines Theatre. Miller chose a dramatic look for the premiere: a glittery, asymmetrical minidress from Balmain’s spring 2010 collection.