Universal Thread Women's Short Sleeve T-Shirt Dress. If it's chilly, toss a denim jacket over this Universal Thread Women's Short Sleeve T-Shirt Dress ($20), and you're good to go.

This American Apparel Women Fine Jersey Short Sleeve Women's T-Shirt ($3-$16) comes in plenty of solid colors, but the striped one is especially nice.

Under Armour Women's Tech V-Neck Short-Sleeve. $25 at Amazon. $25 at farmandfleet.com $25 at Kohl's. ... quick-drying material ensures the shirt won't weigh you down as you work up a sweat.

Model is 5-foot-6, wears a size 32A bra, and is wearing the Hanes Perfect-T Women’s Short Sleeve Cotton T-Shirt in a size S. Connie Park/NYT Wirecutter It has an easy, relaxed fit.