Basically, she knew it all, at least everything in New York. “From hardscrabble nights writing snippets for a Hearst newspaper in the 1950s to golden afternoons at Le Cirque with Sinatra or Hepburn and tête-à-tête dinners with Madonna to gather material for columns that ran six days a week, Ms. Smith captivated millions with her tattletale chitchat and, over time, ascended to fame and wealth that rivaled those of the celebrities she covered.”