EXCLUSIVE AT NET-A-PORTER. Dressing for summer days in the city can be tricky, but Tibi's relaxed tailoring is always a good place to start. Designed especially for us, this shirt is cut from breathable cotton-poplin with split sides and a contrasting camel panel on the reverse. The roomy fit is accentuated with a curved hem that's slightly longer at the back. Half-tuck it into the label's shorts.