Items that are living rent free in my head 

Duo Boots make custom sized boots of various widths and calves. Very good quality.

I have the purple patchwork Sézane bag and I love it sooo much. But it's very small, it just fits a small wallet, phone and maybe a lipstick.

I have the Paula babies and also a pair of Carel Josephine slingbacks (50% off sale score!) and agree that the Carel are better quality and it's easier to fit exactly your size because so many models are available in half-sizes. As to whether the Carel is double the quality and worth paying double the price - well... that's harder to say. I love Carel's style vibe and quality, but I have to wait for their sales, especially since their outsoles are almost always leather. If you're like me you're off to the cobbler to have a rubber sole put on asap, which adds even more to the cost. Paula babies come with a rubber sole so they are good to go right out of the box, but if you're finding the sizing challenging - have you ever checked out Jonak or Bobbies? Jonak for sure has some nice babies that look similar to the Paula babies - iirc they have a lovely rich burgundy/red version - and are a competitive price. I find Jonak sizing more consistent than Sezane across its many models. e.g., a 39 is pretty much always going to fit like you expect a 39 to fit.

Hello beautiful, I tell you: I have the black sezane jacket in a rooster's size and I love it, I love it so much that I think I will also buy the black one. With a sweater and jeans you look very elegant and without complications. I have the same problem with boots and it's not that I have a particularly wide calf, it's that they are made for very thin legs. My discovery was the Sezane Adèle boots that fit wonderfully, the only thing I did was waterproof them with Sezane spray from the Torres brand so they don't get stained or wet. I like them so much that I plan to buy another color. I hope I've been helpful