NEW YORK Designer Mathieu Mirano sent out a memorable invitation to his Fashion Week show: a petri dish that appeared to contain bacteria. The unusual invitation was designed by Alpine Creative Group to get attention for the 21-year-old fashion designer, who also sent the invites to science publications. The original instruction from Mirano was to use live bacteria, but Alpine's Merry Phengvath found a safer alternative: screen-printing in gold and black, colors that echoed Mirano's collection. The 1,400 invitations came in metallic-hued Bubble Wrap envelopes. “He's always thinking of something obscure and avant garde,” Phengvath said, noting that last year Alpine created an invitation using lenticular printing that featured a dinosaur head.