I'll admit, I'm a sucker for viral clothing - and why wouldn't I be when the quality is top notch? Amazon has never let me down with its viral bestsellers, and their current sweater collection is a treasure trove of stylish gems. I found something for everyone: From thin, layerable sweaters to blanket-like cardigans and even vintage-looking cable knit pullovers. You don't want to sleep on Amazon's viral sweaters this year. Shop the retailer's top-sellers of the season, all curated below. 18 Chic Sweaters Going Viral on Amazon - Starting at $15 1.