From dressing up in her great aunt’s clothes as a child to working with John Galliano, Karl Lagerfeld, and others: Harlech’s immersion in vintage is a decades-long love affair.

She wore two vintage gowns to host “SNL” in October 2024 and kicked off awards season at the Golden Globes 2025 in a butter yellow Givenchy 1966 haute couture gown designed by Hubert de ...