Lark & Ro Mock Neck Bell-Sleeve Sweater Dress Lark & Ro's Mock Neck Bell-Sleeve Sweater Dress ($28-$50) has on-trend bell sleeves and is made of soft, cosy yarn. The best part? It's machine washable. Image Source: amazon.com Lark & Ro's Mock Neck Bell-Sleeve Sweater Dress $28 from amazon.com Buy Now