>> Yesterday afternoon, Alexander Wang — in black hoodie, white t-shirt, jeans, and dirtied-up white sneakers — spent two hours taking pictures and chatting with fans at his Spring 2010 Barneys trunk show in New York.  Wang was Barneys' number one trunk show seller last season, according to his PR director Leslie Rubisch — the sales racked up during that period accounted for fifty percent of Barneys' total Alexander Wang delivery — sold, three months before it even hit the floor. Needless to say, he had some expectations to live up to this time around.  Vogue got the scoop on which three Spring 2010 pieces were the best-sellers yesterday, and we chatted with Alex for further details:

What's your favorite piece from the Spring 2010 collection?

Hmm, that's difficult. [Rubisch leans in: "I'm curious to hear what you're going to say!"] I feel like every day I change my mind. But I always seem to come back to Freja [Beha Erichsen]'s look, she really knows how to bring an outfit to life, which is so important in a model for me.

He does have a favorite shoe »

>> Riccardo Tisci, fresh off a stint in Rio de Janeiro over the weekend to support Oi Fashion Rocks with a combination men's, women's, and couture fashion show, arrived fashionably late by half an hour yesterday for a guerrilla appearance at Barneys in New York — his first for a trunk show, which was only announced the afternoon before.  Endearingly adorable in sneakers and with braces, the designer was on hand to see the launch of his new lower-priced (by forty percent) Capsule collection, which focuses on his iconic white shirts and studded pieces, with a few exclusives for Barneys on tap.  We were able to steal a couple of minutes of his time:

You were just in Rio, how was that?

I just got in [to New York] this morning, so I'm a little tired but happy.

You dressed Ciara for her Fashion Rocks Rio performance; she later Twittered, "I'm going to be Givenchy's Muze! So excited!" Do you agree?

Yes, she is a muse. I had never met her before, but it was one of the most amazing moments of my life. We really clicked; I can respect her as an artist and a woman and she respects me as an artist and as a man.  I look forward to working with her again soon.

Would he collaborate with H&M? »

>> Fashion's Night Out Could Become A Permanent Fashion Week Fixture —If CFDA President Diane von Furstenberg has her say (and Anna Wintour will assuredly support her), Fashion's Night Out won't be a one-off event: “It was a huge success. It was fantastic; it’s just like Hallmark, when they invented Mother’s Day. Every Thursday before Fashion Week, we will have Fashion’s Night Out!”  But nothing has officially been decided, and retailers are waiting to examine the residual effects on sales before the possibility is further examined. Simon Doonan says he's unsure about doing it again, because Fashion's Night Out didn't generate big sales for Barneys. [The Cut, The Cut Twitter]

>> INSIDER WIRE —Barneys has been seeing a lot of camera time lately: Liya Kebede shops there in Proenza Schouler's Cruise 2010 video, and yesterday, Terry Richardson was photographing Catherine McNeil, in black Lanvin dress, bird on her shoulder, on the main floor in New York. [The Shophound]

>> INSIDER WIRE — Now that New York Fashion Week is over, Barneys creative director Simon Doonan has reason to celebrate — and it's not just because he gets to catch up on sleep.  He and his partner of fourteen years, Jonathan Adler, tied the knot earlier today at City Hall in San Francisco.  A more formal ceremony was set to be performed back at the couple's hotel before they were whisked away to Big Sur for the honeymoon. [FabSugar]