with or without a tie, or tucked in on their own. Rock dressier button-up shirts with chinos, wool flannel, or suit trousers.

We have four casual, oxford-style picks: a reliable crowd-pleaser; a luxury-logo classic; a splurge-worthy button-down with special ... lose the tie, and you look effortlessly elegant for an ...

“Just tuck it into some slacks with a cropped jacket,” he says, or button it down with a tie. Actor George Olesky says that the Standard Poplin Dress Shirt from Banana Republic is the way to go.

Male politicians are ... Without the structural support of a tie, the points of a semi-spread collar can spread out and appear sloppy. Conversely, a button-down will always look neat and tidy.