Jessica Alba was the first to don this elegant ivory-and-black Lanvin Spring 2012 dress to celebrate the designer’s Fall 2012 presentation during Paris Fashion Week back in March.

I love Jessica’s impeccable style choices and this one-shouldered Lanvin design was no exception. She accessorized with some matching black heels and a bulky black ring to keep the black-and-white theme going, along with a chic updo to finish off this sophisticated ensemble.

However, little did we know that this would not be the last time we saw this asymmetrical monochrome dress make an appearance.

Lily Donaldson played copycat and rocked a near-identical look when she officially opened the Harrods Summer Sale in June. She too added subtle jewels by Boodies so as to not take away too much from the bedazzled dress and kept the rest of her look simple.

Black pumps, minimal makeup and a simple swept-up ponytail completed her look.

I’m really having a hard time choosing as they both look phenomenal. While I’ve always been a fan of Jessica Alba, I’m leaning towards Lily’s look.

Her lengthier frame totally rocks this one-shouldered frock.

LANVIN - SWAROVSKI SNAKE VISCOSE CREPE DRESS

You can buy Jessica’s and Lily’s Lanvin dress from Luisa via Roma.