It turns out, Sia has a good reason for always covering her face with huge wigs.

While appearing on Carpool Karaoke for The Late Late Show With James Corden, the 'Chandelier' and 'Titanium' singer revealed that she keeps it for privacy when she knows cameras will be around. But even though her reason for the wig might be valid, it certainly didn't stop Corden from poking fun at her for wearing it--or keep her from laughing at herself either.

Tags: The Late Late Show with James Corden sia