Jewelry designer Alexis Bittar, whose cozy Upper East Side shop we adore for its mix of taxidermied wildlife and ever-more-exquisite cuff bracelets, is on a roll. Last year, the wizard of Lucite took home the Council of Fashion Designers of America’s Accessory Designer of the Year award, made a splash with ads featuring Joan Collins, and opened a trio of boutiques outside of New York (in Los Angeles, San Francisco, and Chicago). His latest project is a hospitable collaboration: St. Regis Hotels tapped Bittar to help celebrate the opening of the brand’s twenty-first luxe property—a beachfront resort in Puerto Rico where the butlers “specialize in poolside rituals” (sign us up!)—with a jewelry collection. He took his inspiration from the legendary baubles of Caroline Astor, the socialite mother of St. Regis founder John Jacob Astor IV, and created a necklace, earrings, and brooch (at right). The hand-carved and hand-painted pieces, which range in price from $310 to $490 and are available at Bittar’s stores, mix the designer’s signature Lucite with crystals and pearls. Meanwhile, we’re looking forward to his next round of print ads, which we hear were shot by artist Jack Pierson.