Long-sleeved T-shirts are an underrated wardrobe ... check out our buying guides to functional white T-shirts and oxford button-downs you can wear with a tie or untucked. Update on April 7 ...

This week, the star posted in a long-sleeve crewneck top, which instantly made me realize I had a blind spot in my spring wardrobe. While I have plenty of white T-shirts, Winfrey’s outfit ...