From the April issue: Looks like a few trendy designers are reading up. Some big names in apparel — P. Diddy’s Sean John, H & M and now BCBG Max Azria — have moved to an unlikely locale: Fifth Avenue in the low 40s, in sight of the New York Public Library. Once a hodgepodge of low-end shops, delis and lunch counters catering to office workers and suburban commuters around Grand Central Terminal, the area is perhaps becoming an extension of the famed retail corridor a bit farther uptown. The change happening around the watchful gazes of the library lions indicates the area will attract fashion elites as well as literary elites. more By Rachel Deahl