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Mary-Kate and Ashley Olsen stepped out in flats for a shopping spree in Paris over the holiday weekend.

Leaving the Hotel Costes, which, incidentally, is where Beyonce and Jay-Z are staying, the girls were dressed in typical boho Olsen twin fashion, wearing matching Celine jackets.

But while Ashley carried a nice, shiny and new Chanel bag, MK is still rocking her beat-up vintage Birkin.

The girls recently announced a couple of new ventures. They'll be designing a new line of prescription glasses under their Elizabeth and James label and they'll also be launching a new fashion website, StyleMint, which is like a "wine of the month" club, except with tees designed by Ashley and Mary-Kate!