From Topshop, the Jolene pump is nearly an exact replica...a perfectly pointed toe and all kinds of strappy goodness. It comes in black, silver and a cute grey, reptile-esque pattern and rings up at a less expensive $80. (plus free shipping)
As for sizing, it only comes in US half sizes. I am typically a size 7, so I followed the sizing advice in the description and ordered the next size up...7.5US/38EU. The fit is perfect!
Blazer: J Crew Campbell Blazer in Blue Herringbone (similar)
Sweater: Old Navy (similar)
Necklace: J Crew Factory
Jeans: J Crew Factory Boyfriend
Hmmm, perhaps I need the silver as well!