COLLAR MY WORLD: Ikram Goldman says she can hardly keep Carolyn Rosenberg’s handmade collars in stock at her namesake Chicago boutique. Since September, she has sold more than 60 of the collars, which retail from $1,200 to $1,500. “If you have a really simple dress, it literally finishes the outfit,” Goldman said. “We sell them like crazy, but at the end of the day…it’s about what they do for the person.”