I tested button-up tops from Banana Republic, Gap, and Old Navy. My favorite was durable and budget-friendly.

I tested button-up tops from Banana Republic, Gap, and Old Navy. My favorite was durable and budget-friendly.

I tried on button-up shirts from Banana Republic (left), Gap (middle), and Old Navy (right). Karen Santos for BI From effortless everyday outfits to business-casual occasions, a good button-up top is one of the most versatile spring and summer fashion staples. I often wear button-ups over a swimsuit with jean shorts for beach days, or pair them with nice slacks for professional lunch meetings or work events. However, I noticed many of my tried-and-true staples were starting to wear down, so ...