>> The mystery man who showed up as part of Marc Jacobs' posse at the Costume Institute Gala is indeed his latest boyfriend, Lorenzo Martone, who is supposedly a Brazilian advertising executive based in New York.
L: Lorenzo, Sofia Coppola, and Marc at the Costume Institute Gala last week
R: Top — Donna Karan and Marc, Lorenzo in background at Valentino's birthday party last night; Bottom — Lorenzo, Marc, and Eva Herzigova recently
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