The real C.Z. Guest — played by Chloë Sevigny on ‘Feud’ — covered a mobster’s funeral for The Post

C.Z. Guest, who’s portrayed by Chloë Sevigny in the TV series “Feud: Capote Vs. The Swans,” was a pillar of society, a fashion icon, a muse to artists and a confidante to movers and shakers. Readers of Page Six will recall her as the mom of “Deb of the Decade” Cornelia Guest. She belonged to the...