When beauty-trend forecaster Addison Cain moved to New York from Houston, she was “fully unprepared” for the chill in her prewar apartment. She pretty much immediately bought this Bedsure blanket in white for her new home. “It was a highly recommended pick on Amazon, so I just went for it,” she says. Cain easily feels the cold, “so I always have a blanket handy, even wrapped around me at my desk when I work from home. I don’t know…