I frequently wear a tank underneath my clothing to add a little modesty or a contrasting color to my outfit. These Seamless Layering Tanks are just $6.99 today. They come in one size that should fit 0-14, and the material is 92% nylon and 8% spandex. 10 colors to choose from.
Shipping is $2.95 for the first tank and $0.75 for each additional. The deal runs through June 19, but a limited quantity is available.