I love Rails. I’m 5’8 135 pounds and usually wear a medium in Rails, with some exceptions. My more recent purchase were size small so perhaps their sizing is changing a bit.

I find it runs true to size.

Just go with the size chart. I’m usually an XL and the XL measurements look a tad on the small to me compared to other brands. But they have provided a size chart so just use it.

I have a few Rails blouses, which I really like a lot. The sizing is spot on. I'm a "small" in just about every designer/retailer. Rails size S fits me as expected. If it helps I'm 5'9, 125lb, 32DD.

I really like this shirt/vest (found in the other post about "dress me for work"):

https://www.neimanmarcus.com/p/rails-bambi-striped-sweater-vest-with-contrasting-sleeves-prod263180435?childItemId=NMT4YST_&msid=4598114&position=26
https://www.rails.com/products/bambi-sweater-ivory-navy-stripe?variant=43077317918889&gclid=Cj0KCQiAuqKqBhDxARIsAFZELmIR-cuzCbCfDsEBU-4CiMubxYBbCf9PpFu08s4OzPIQdUlvLEUOcckaAjchEALw_wcB

Anyone who owns things from Rails know how it typically runs? I've been reading reviews and just getting confused.
I'm either a Small or Medium.

Thank you!