If You Only Buy One Article of Clothing This Season, Let It Be This. Literally, the perfect tee.

If female entrepreneurs have taught me anything, it's that when you can't find what you're looking for, you should create it yourself.

That's exactly what my friend Carly Walko, a fashion stylist and blogger at Thirty Something Fashion, did when she couldn't find a high-quality, affordable, basic T-shirt in the style and fit she wanted.

In addition to a slimming fit, Carly wanted her T-shirts to be manufactured locally, in buttery soft fabrics, and a charitable component tied to each and every sale. After a year of research, investment, and hard work, all the stars aligned and Thirty Something Tees was born. Here's more on the story behind the brand.