Can I Borrow That?

When it comes to accessories, it's share and share alike for the Olsen twins, Kardashian sisters and other stylish celeb clans. By Melissa Liebling-Goldberg

MARC JACOBS BAG

Younger sister Hilary Duff toted her Hudson bag to lunch with friends in London in March, but older sister Haylie wore it first while shopping in L.A. in February.