Button-down shirts lean more casual, while button-up shirts (in the classic menswear sense) lean dressier. Button-downs are also often more versatile—they can be Oxfords or short-sleeved.

For most people, "button-down" and "button-up" are interchangeable. We use the term off-handedly whenever we need to refer to a dress shirt that has buttons up the front and buttons on the cuffs.

Related: The Fastest-Selling Spring Fashion Finds for Women Over 40 — All Under $30 Long-Sleeve Button-Up Shirts 7. Mellow Yellow: Keep things cool and mellow in this pale yellow blouse. 8.

Luckily, Amazon’s fashion department is packed with breezy button-down shirts that can be dressed up or dressed down, worn on their own or layered underneath blazers and jackets. There are airy ...

Timeless and practical, shop a rainbow of summer button-up shirts in cotton, linen, chambray, silk, crochet, and more.

Charlize Theron was recently spotted in New York wearing a black-trimmed, white button-up shirt, and we found a lookalike at Amazon for just $28. It has the same two-toned details and a breezy ...

I tried on button-up tops at Gap, Banana Republic, and Old Navy. The shirts from Gap and Banana Republic were the same price, but were made up of different fabrics.