Zoe in RM by Roland Mouret
A more affordable alternative is the Ava dress from Stop Staring! (one of my favorite new brands) for $130.Ashley' in dove gray and the 'Bonnie' dress and I always get positive comments. I've actually ordered the Ava in red for a fundraiser I attend every year. Mine is back-ordered so hopefully I'll get to see it first hand soon.
For the shoes, I opted for the Kelsi Dagger 'Sydney' from Bluefly. I own these and they certainly make a statement. You can do a Google search for Bfly coupon codes and probably get an extra 10% off.