9 designers will be added (and, in Costello Tagliapietra's case, re-added) to Uniqlo's line-up of designer collaborations this spring. Each will design six pieces for a staggeringly low $29.99 to be added to Uniqlo's spring roster. It'll kick off with Costello Tagliapietra on April 21, then Charlotte Ronson's on May 5 (including the adoraby striped tie-waist dress), and Vena Cava's on May 12. The other designers include Zechia, Tiny Dinosaur, Suzuki Takayuki, Theatre Products, Nine, and Double Standard Clothing, so start saving your loose change! (WWD)