You knew this was coming — I can't resist Lauren's laid-back chic sometimes. She's a bona fide girl about town promoting her Mark cosmetics gig, and then appearing on The Late Show With David Letterman last night. She pulled a Carrie Bradshaw wearing a studded belt with both of these looks. For David, she was tailored and tough in Alice + Olivia navy wide-leg trousers and Mike & Chris cropped leather jacket — no LC outfit is complete without a Chanel bag. For Mark, she wore a skirt from Whitney Port's clothing line, said studded belt and a Fab Yaya Aflalo polka-dot tank. Which look do you like better?

To get Lauren's cute look on the right, read more.

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