Old Navy Sleeveless Button-Front Rib-Knit Midi Dress This Sleeveless Button-Front Rib-Knit Midi Dress ($26, originally $35) is an Old Navy bestseller. We love how it hangs. It's the perfect dress for a warm Summer night. Image Source: oldnavy.gap.com Sleeveless Button-Front Rib-Knit Midi Dress $26 from oldnavy.gap.com Buy Now