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In South Korea, it is "extremely tough" for artistes to recover when they do something that puts a crack in their "idol" image, says K-pop columnist Jeff Benjamin.

Key and Basden have a fantastic comic rapport, playfully exploring the stereotypes of the British eccentric and grumpy artiste.

But fashion critics everywhere do get to watch their favourite actors, artistes and influencers walk a lengthy red carpet.

Some believe the artistes themselves and their management agencies have facilitated a "false intimacy" between idols and fans.

Though both governments have restricted cultural exports in recent years, artistes from the countries have often collaborated on various projects.