In a city where it can be difficult to go a full minute without spying someone’s pet pooch, it’s not surprising that a high-end hotel would throw a birthday party for a local four-legged celebrity, or that so many other celebrities would attend with their furry friends. There are enough dogs of distinction, in fact, to put on a doggie fashion show for a new charity organization. And this is exactly what happened at the Heathman Hotel on May 1 from 12:30 to 2:30 p.m. St...