My footwear technologist and I have worked – and continue to work – very hard to ensure consistency in sizing across the range.
Shoe brands differ significantly to one another in their sizing, so we recommend going by your European size where possible, as this is what we have worked to and is generally the most consistent across other brands.
There is no such thing as a perfect size conversion between different countries because they use different scales, so please see this as an approximate guide.
The shoes are European Standard width, unless specified as W, which is wide-fit (Wide is currently available in Rosie, Maisie, Aubrey and Florence, but coming soon in other styles... we're working hard on it! You may also find that the standard fit Olivia works for you if you have wide feet, as she has a ruched fit which is less size-critical. If you have wide feet, take the next size up in standard Olivia).
If you would like more information or assistance, you can email email@example.com