I didn’t take anything, they only do height, weight, pre op photo’s, blood pressure, some take swabs as well bit that’s about it. Sizes will vary post op, I’ve bought loads of cotton bras without underwire to try and find a comfy one (macom is so tight on me and Mr S said I shouldn’t have bothered buying it!), finally found a couple tho in Marks (one is Maternity but supportive and comfy!)