The actor, 65, showed off his shaved head in an Instagram photo on Monday.
“I decided dealing with hair was superfluous during these times of quarantine,” he captioned his photo, which featured him with a salt-and-pepper goatee and black sweater.
Noth's new look certainly caused quite a buzz.
“Why did you wait so long????” his “Sex and the City” co-star Sarah Jessica Parker commented.
"always in love with Mr. Big," someone else wrote, in reference to his character on the HBO series.
"Hair or not you’ll always be Mr Big to many people," another person countered.
Noth is the latest celebrity to get in on the quarantine haircut game.