Xersion, Girls Size Medium 10/12 Blue Tank Top with lightning bolt.

Generally, you can opt to dress in something trendy and of-the-moment or choose timeless, capsule wardrobe pieces that never really go out of style. But currently, one piece has blurred the lines and crossed over from the un-noteworthy essential category to being named a must-have item: the tank top.

In addition to athletic usage, tank tops have traditionally been used as undershirts, especially with suits and dress shirts. They are sometimes worn alone without a dress shirt or top shirt during very warm and/or humid weather.