Which bra is best to avoid bra lines?

To avoid bra lines, look for a bra with a higher back strap platform, which is where the strap joins the fabric. This will smooth out the fleshy part under the underarm and also allows for more coverage of the actual back.

Also, find bras with non-dig edges; for example, a raw-cut edge that lays seamlessly with your skin. Super strong elastics dig in where those bra edges end — you definitely want to avoid any tight elastic bands.