Both Jessica Alba and Olivia Munn were in NYC, doing their own thing, but they were clearly on the same fashion wavelength in their green sheath dresses. Jessica wore her knee-length, square-neck Narciso Rodriguez dress with silver mirrored pumps and a black-and-white bag, while Olivia sported a green Michael Kors sheath dress with a back slit with black-and-gold ankle-strap sandals. Let these ladies inspire you to add a green sheath dress to your wardrobe if you don't yet have one. You can wear it with high-heeled sandals or colored pumps for evening, with a blazer and simple pumps for work, with booties and a coat during Fall, and with flats and a leather jacket for a day out. Shop our favorite green sheath dresses below to get in on the celebrity-approved style.