Nicholas Braun — who plays hapless Cousin Greg on HBO’s “Succession” — was an unlikely fave at New York Fashion Week.

Spies said that fashionistas were freaking at a Rag & Bone show when Braun was spotted in the front row.

Braun recalled to the Hollywood Reporter that while shooting the show in London, co-star Kieran Culkin said, “ ‘I’m going to get a suit made on Savile Row.’ We went there, and it [cost] 2,000 pounds and I was like, ‘All right; next season.’ ”