Striped t-shirts designed by Justin Bieber’s stylist Karla Welch are now up to 70 percent off at Shopbop, with short- and long-sleeve options, in red, blue, yellow, and green.

To prove it, here are 15 objectively perfect versions—in a myriad of stripes, shades, and price points—to help kick off your blue period in high style. 1/15 Uniqlo extra fine cotton broadcloth ...