A "tee shirt" is a casual piece of clothing with short sleeves and a round neckline. It is typically made of soft fabric and is worn on the upper body. Full definition
I'm a huge advocate of tee shirt dresses since they are so easy to throw on and layer with. (alexandriahaddad.com)
I also recommend going for a plain tee shirt with no writing on it, because the writing tends to interrupt your overall silhouette. (effortlesslywithroxy.com)
I feel like I have owned so many damn white tee shirts in my life and still don't feel like I have every style I «need». (thelocusofstyle.com)