While there are numerous tees for numerous occasions, this one is my go to:
Ann Taylor, scoop neck tee, $24
I love this t-shirt for so many reasons- the first is the fit. It's not clingy. Very important to me. There is no need to see bumps and rolls in a classic tee. I also love the scoop neck because it's not flaunting in the way a v-neck is, but it still opens up the neckline.
I can use this shirt tucked into a pencil skirt and a hot pink cardi or I can pair it with cargo shorts and run out the door.