Kendall & Caitlyn -- This Is How We Roll ... Sushi Date In Bev Hills

A Beverly Hills sushi restaurant turned into a catwalk this weekend -- when Kendall and Caitlyn Jenner rolled through for a quick lunch date.

The two met up at Sugarfish ... where Kendall and her friend Hailey Baldwin showed up in workout gear after a gym session.

But Caitlyn was WORKIN' IT -- showin' off the gams in a pencil skirt while the paparazzi snapped away.