LONDON — In certain social circles, Anne Singer is something of a monogramming legend.

The French-born Ms. Singer, whose husband’s great-grandfather Isaac Singer invented the sewing machine, established the Monogrammed Linen Shop four decades ago on Walton Street, an enclave in the Chelsea/Kensington area that’s lined with upscale shops. For everyone from Hollywood celebrities and European royalty to expatriates and the posh British set, her sweetly designed and monogrammed baby pillows, personalized linens and home accessories became gift-list perennials. Read more