Kevin Federline is in New York City for a couple of days, supposedly ironing out the finishing touches on a new acting gig, but Friday night will see Spears’ ex up front and center at the Marc Jacobs Autumn/Winter Fashion Show. The celebrity-loved designer has invited Federfreak to his the show, which will be held at the Lexington St. Armory at 8pm. Marc has even agreed to dress the pop of four from his men’s line for the affair.