For starters, the retailer has several coordinating pieces to create matching sets out of your go-to ... Keep scrolling to shop our picks. Old Navy Rib-Knit Lounge Tank Top ($20) This tank top ...

Through the years, two-piece sets have surged in popularity ... in our admittedly biased view. Old Navy Rib-Knit Lounge Tank Top ($12, originally $20) and Old Navy Sweater-Knit Lounge Leggings ...