BEST & WORST OF TIMES: Best & Co.’s high-end children’s boutique at 289 Greenwich Avenue in Greenwich, Conn., abruptly shut its doors Saturday. The 4,800-square-foot flagship, still stocked with merchandise, has signs on the door saying the store has closed and gives the name of the bankruptcy attorney and case number. Neither Susie Hilfiger, creative director of Best & Co., company officials nor Ben Stanziale Jr., the bankruptcy attorney on the case, could be reached for comment Sunday, but sources said the firm filed for bankruptcy last week. FAO Schwarz, which was acquired by Toys ‘R’ Us, this year, purchased Best & Co. from Hilfiger in 2007, and at the time revealed major retail and wholesale expansion plans for the brand. Recent developments included designer partnerships with Shoshanna and Peter Som. Hilfiger bought the brand, which was founded in 1879, in 1997 and turned it into an emporium of high-end children’s apparel, accessories and furniture. Best & Co. also has a boutique on the top floor at Bergdorf Goodman, but it couldn’t be learned at press time the fate of that shop and Best & Co.’s fledgling wholesale business.