The stars of the hottest girl band in the world - BLACKPINK - sit down backstage at The Late Show to test their knowledge of each other. Watch these superstar performers Jisoo, Jennie, Rosé and Lisa rock in this special edition of Pop Quiz.

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The Late Show with Stephen Colbert is the premier late night talk show on CBS, airing at 11:35pm EST, streaming online via CBS All Access, and delivered to the International Space Station on a USB drive taped to a weather balloon. Every night, viewers can expect: Comedy, humor, funny moments, witty interviews, celebrities, famous people, movie stars, bits, humorous celebrities doing bits, funny celebs, big group photos of every star from Hollywood, even the reclusive ones, plus also jokes.