Jumpsuits may be in, but getting out of one—say, in the close confines of an airplane lavatory—can be tricky.

Choose this Diane von Furstenberg outfit instead.

It offers all the practicality of two separate pieces while giving the chic, elongating effect of one seamless garment. The split sleeves of the black Astor silk top are easy-breezy in hot weather while hiding the underside of the upper arm (just in case you've been neglecting your triceps at the gym). And the matching cropped viscose/polyamide pants, with a hint of stretch (dubbed the Clean Pinca), are the perfect basic.

$275 for the top; $275 for the pants, at Neiman Marcus, 737 N. Michigan Ave., or at neimanmarcus.com.