J.Crew’s Jenna Lyons has been on a publicity spree as of late. She peered behind her trademark eyeglasses on the latest Fast Companycover, made up words while discussing her juice cleanse, and even let the magazine take a 360-degree panorama of her office. And in just a few weeks, she’ll be in the spotlight again — this time, using her brand’s influence to share it with the 2012 CFDA/Vogue Fashion Fund winner Greg Chait of The Elder Statesman, shoe designerTabitha Simmons, and jewelry designer Jennifer Meyer, who have designed limited-edition capsule collections for J.Crew that will be available online May 22. For those itching to get their hands on these collections earlier, there’s semi-good news. You can get access justone day sooner by signing up online on May 8.