16 items in this article 1 item on sale! Photo-Illustration: The Strategist; Photo: JB Lacroix/Getty Images If you’re like us, you’ve probably wondered what everyday stuff famous people add to their carts — like hair spray or an electric toothbrush . We asked the actress Isabelle Huppert — who stars in the new Hong Sang-soo movie, A Traveler’s Needs , out in theaters now — about the lip liner, mints, and warm socks she can’t live without. Uniqlo Heattech Socks $6 $6 I have cold feet, so I need