Hey hun Your main issue may be raising your arms to put clothes on. The swelling u can sort with a larger size. If you prefer a dress outfit you are better with a high neckline / thick arm/straps to hide the bra shift style dress with a zip at the back so you could step into it. Failing that you could always wear a smart trouser suit and blouse/shirt as its obviously more easier to do up.
Depending on how ur healing /pain u may need someone to help you get dressed. I had to wear compression socks for two weeks post op as I had blood clot issues and I couldn’t pull my socks up to put them on my mum had to help me as it would hurt my chest. So bare that in mind if you opt for a skirt/dress and want to wear tights.
Hope that helps and all the best with your op and interview fxx