Depending on how bad it is, it can last up to 3-4 months.
Seam (sewing) In sewing, a seam is the join where two or more layers of fabric, leather, or other materials are held together with stitches. Prior to the invention of the sewing machine, all sewing was done by hand.
A seamed bra is one that has a seam running through the cup. A bra seam can add additional support and give a more exact shape to the cup. Seamless. A seamless bra is one that has been molded into a permanent shape and fit without seamed cups.