Jason Wu, Honorary Washingtonian... Baby Buggy Summer Dinner Moves...

CAPITAL CITIES: “I feel like I’m an almost honorary Washingtonian,” said Jason Wu, he of the multiple MObama credits, who visited the capital this weekend for two days of events. On Friday night, the designer previewed his fall collection at the Long View Gallery, with a party co-hosted by Nordstrom and Vanity Fair’s Amy Fine Collins, followed by a public appearance at the department store on Saturday. “It was an amazing success,” said Wu, whose cocktail bash and one-hour personal appearance made more than $200,000 in sales and pre-sales. “One customer bought 41 pieces, basically the entire fall collection.” Tonight, the designer hits up another town, this time across the pond. Christine d’Ornano and Plum Sykes are co-hosting an event for Wu at d’Ornano’s London home.

NEW HOME: The Baby Buggy Summer dinner at Jessica and Jerry Seinfeld’s Amagansett home has become quite a Hamptons tradition. This year, though, it will take place in new environs. The Reed Krakoff company signed up to sponsor this year’s dinner, and Reed Krakoff and his wife, Delphine, will open the doors to their East Hamptons estate Lasata to co-host the dinner there with the Seinfelds. The dinner will take place on July 30, and there will be much reason to celebrate — this year marks the 10th anniversary of the women’s and children’s charity founded by Jessica Seinfeld.

HORSING AROUND: Gucci is strengthening its ties with the equestrian world through a newly signed multiyear agreement with Australian show jumper Edwina Alexander, who is currently ranked first globally in her event. The Gucci riding attire, which was designed especially for this collaboration by creative director Frida Giannini, features the iconic green-red-green web as well as the brand’s crest and will be worn by Alexander during competition. The Italian luxury house revived its involvement in the equine world in 2009 with the sponsorship of the Gucci Masters in Paris, where Alexander and current rival Charlotte Casiraghi will participate.

JUNK YARD DOG: A junk shop will appear Wednesday in a display window of Neiman Marcus’ Dallas flagship courtesy of Houston artist Bill Davenport, who describes the work as “sort of an ideal, super-thrift store full of all the things I would die to find if it were all collected in one place.” Davenport’s window will feature wasps’ nests, country-music fan art, dolls, yarn, bent wires, cork bark, Japanese Catholic paintings,” mystery objects” and more. It’s one of seven windows by contemporary artists making their debut in conjunction with the Dallas Art Fair, which runs April 8 to 10 at Fashion Industry Gallery. Neiman’s has sponsored the art fair since it was founded three years ago by FIG owner John Sughrue and art consultant Chris Byrne. “We thought this would be a nice tie-in,” Byrne explained. “Andy Warhol, Jasper Johns and Robert Rauschenberg had all done windows in their careers, so we knew there was this great connection to that, and Neiman’s flagship store is so Dallas.” Selected by regional art experts, featured artists include Wunderkammer of Webb Gallery in Waxahachie, Texas, which is assembling a “cabinet of curiosities,” and Richard Patterson, who plans to install a video of “science fiction existential pain.”