Nichole from Bluebird & The Boy shares a tutorial at Sew McCool showing how you can sew a high-low tank top from a woven fabric. She shows how to create the pattern by tracing around a top (woven) that fits, and then how to sew it into a tank. She shows the one she made for her young daughter, but this would also work for teens and adults. Go to Sew McCool to find her tutorial.
[photo from Bluebird & The Boy on Sew McCool]