Elisa Sednaoui

The Hotel Palace Copacabana in Rio de Janeiro was filled with a gorgeous crowd ready to fete 2013's Pirelli Calendar.

Actors Owen Wilson, Stephen Dorff, and Sophia Loren joined this year's photographer Steve McCurry and calendar girls Liya Kebede, Petra Nemcova, Elisa Sednaoui, and Hanaa Ben Abdesslem to celebrate the calendar's launch with a press conference and gala. At the gala, acrobats hung from the ceiling and did gymnastic stunts above the dining tables. After noting that journalists at the event asked lots of questions about the environment and foreign politics, Summer Rayne Oakes characterized the blue and white lighting scheme as "trippy."

Petra Nemcova said the real sparkle came from the other women in the calendar, like Isabeli Fontana and Kyleigh Kuhn. "They bring the light to so many lives!" Nemcova said.

A look at the unveiling of the calendar here in the gallery.

Although pajamas are a bedtime staple for most, gutsy celebs are showcasing how to style sophisticated sleepwear for daytime, as well as on the red carpet. Test-drive this trend for daytime — printed pajama topper and distressed denim — like Drew Barrymore, spice it up with heels like Rihanna in Pucci for an evening look, or go full throttle with a slimming silk set and matching sequin blazer like Elisa Sednaoui in Ferragamo for a fabulous cocktail party. Whichever look you choose, we can assure you that this trend's comfort and style will have you rethinking all of your chic sleepwear. Step inside to see who else has embraced the pajama trend and to shop the looks for yourself.

>> It's a week of double-timers: two Haider Ackermann looks, two Calvin Klein looks, and one model who appears twice. See who's wearing what — and where — in the slideshow.

>> For its second-ever print campaign, Shopbop cast Elisa Sednaoui to be captured by Jason Nocito in a Connecticut home. The series of several images feature Sednaoui in a selection of the e-tailer's soon-to-be-available Fall highlights.

“Elisa Sednaoui’s confident style and authentic sense of fashion successfully captures the modern spirit of this campaign,” said Darcy Penick, divisional merchandise manager for Shopbop, of the choice. The ads are expected to run in the September and October issues of magazines like Vogue, In Style, Elle, and Lucky.

Elisa Sednaoui has rocked Fashion Week around the globe all month long and caught our attention looking effortlessly cool at fashion's latest fêtes in Paris. Now we're giving the 24-year-old model our full attention — and we think you should too. With a résumé that includes catwalking for DVF, Catherine Malandrino, Betsey Johnson, and Vivienne Tam, it seems the gorgeous Elisa Sednaoui learned a thing or two about crafting her own seriously sexy-cool ensembles. We're crushing hard on the way she spins easy-chic red-carpet style — click through for 25 of her most memorable looks to date and see why we're smitten.

There's a big neutral story happening for Spring, and if its most recent ad campaign is any indication, H&M will have you covered when it comes to neutralizing on a budget. It has brought on the dark-featured, totally sexy photographer-cum-model Elisa Sednaoui to bring a little sultriness to the mostly monochromatic campaign, shot by Asa Tallgard, that includes tailored separates for day and night. At the top of our Spring shopping list: that swingy trench with the mini-ruffle detail.

>> The deluge continues; after yesterday's introduction to the Spring 2011 Chanel, Tom Ford, and Marc by Marc Jacobs campaigns, today brings another onslaught — Karlie Kloss's third straight campaign as face of Christian Dior; a first look at Kasia Struss for Miu Miu (Sasha Pivovarova and Querelle Jansen are also said to have been cast by the label); and perhaps our favorite campaign of the season so far, Alex Prager's take on Karolina Kurkova for Bottega Veneta, left.

>> For the 2011 Pirelli calendar, which launched in Moscow today, Karl Lagerfeld said that he produced “the visual version of Homer. I did with my camera what he did with his pen, although we understand that he probably didn't use a pen.” Lagerfeld gathered 15 female models, 5 male models, and Julianne Moore in his Paris studio back in April to produce 36 black and white images of deities from ancient Greece and Rome for the calendar. “I wanted to do something different. I looked at all the other calendars,” he explained, adding: “With such a concept and boys and girls like this, it was an easy job.”

Lagerfeld was surrounded by a cadre of the models featured for the Moscow launch, including Natasha Poly sporting a new brunette hair color. But who did he cast as whom? Julianne Moore plays Hera, Brad Kroenig poses as Zeus, Lara Stone gives her best Aphrodite, Jeneil Williams channels Hades, and Baptiste Giabiconi embodies the roles of both Narcissus and Apollo.

The rest of the cast includes: Bianca Balti (as a Bacchante), Elisa Sednaoui (Flora, Echo), Freja Beha Erichsen (Apollo, Pollux, Orpheus), Isabeli Fontana (a Bacchante), Magdalena Frackowiak (Athena, Estia), Anja Rubik (Hermes, Terpsichore), Abbey Lee Kershaw (Echo, Castor, Eurydice), Lakshmi Menon (a Bacchante), Heidi Mount (Aurora, Amphitrite), Erin Wasson (Ajax, a Bacchante), Natasha Poly (Melpomene), Daria Werbowy (Artemis, Penthesilea), Iris Strubegger (Athena), Sebastien Jondeau (Mars), Garret Neff (Bacchus), and Jake Davis (Achilles).

A peek at the calendar and launch below.