Strike a PoseCara Delevingne, Marc Jacobs & More Fashion Instagrams (PHOTOS)Marc Jacobs celebrates the gay marriage ruling, DVF jams with Alicia Keys, and more of fashion’s best snaps.Emilia Petrarca06.29.13 4:45 AM ET Marc Jacobs celebrates the Supreme Court’s gay marriage ruling, Diane von Furstenberg sings with the ‘Girl on Fire,’ and Zac Posen takes to doodling. Plus, more of the fashion set’s best snaphots from this week. via InstagramVogueGuests channeled The Great Gatsby and danced the night away at Hamish Bowles’s 1920s-themed 50th birthday party. Bowles also was celebrating his 21st year at Vogue, and editor in chief Anna Wintour hosted the event. via InstagramCoco RochaAfter signing hundreds of copies of her latest Elle cover, supermodel Coco Rocha says: “Still signing mags. Decided to get more comfortable.” via InstagramJoe ZeeElle magazine creative director Joe Zee writes, “Here’s a preview of our new issue. Guess where I am?” Easy—there’s only one person in the world who would have pillows with her own face on them and it’s Paris Hilton. via InstagramMarc JacobsMarc Jacobs and his partner shared a powerful pic after the Supreme Court struck down the Defense of Marriage Act on Wednesday. “Love is love” reads the caption. via InstagramDiane von Furstenberg“With the Diva in Paris!” writes Diane von Furstenberg, who sang along to “Girl on Fire” at Alicia Keys’s concert in Paris. We love how the designer calls Keys “the Diva” with a capital “D.” via InstagramRebecca MinkoffAt the launch party for Rebecca Minkoff’s new denim line, RMDenim, Man Repeller Leandra Medine, Eva Chen, and Rachel Strugatz strike a pose with a really strange-looking bush. via InstagramAnna Dello RussoIf Paris Hilton can have pillows with her own face on them, then Vogue Japan editor at large Anna Dello Russo can certainly drink Coca-Cola out of a can with her own name on it. via InstagramTaylor Tomasi HillStreet-style star Taylor Tomasi Hill frolics around Christopher Cane’s resort 2014 collection, which is so cool it’s got us kicking up our heels too. “The clutch is a no brainer,” she writes. via InstagramZac Posen“Drawing with crayons at lunch today,” writes Zac Posen. The restaurant should definitely frame that tablecloth, though it was probably a little stained after the designer’s meal was over. via InstagramCara DelevingneSupermodel Cara Delevingne: “Glastonbury are you ready??!!” Glastonbury: “Uh, no!” via InstagramNicola FormichettiNew Diesel artistic director Nicola Formichetti takes a Citi Bike for a spin across the Williamsburg Bridge. We wonder how he got back.