If you only wear tees occasionally, or you're still figuring out your style, don't splurge. Buy a couple of entry-tier tees in both fits, wear them, and see which silhouette you actually reach for.

Upgrading is pointless if you can't tell the difference. If a $25 tee from Target makes you feel as good as a $75 one from a boutique, you're done. Spend the difference on coffee or a good jacket.

Also, if you're between sizes, don't obsess over the label. An oversized fit in a medium might look better than a large. Try both.