The MSc has a specific career in mind for which I'd probably wear smart dress, e.g. blouse and black trousers (but not necessarily monochrome).
For the interview I'd probably wear something similar, a reasonably smart blouse for example, but a suit or white shirt feels a bit over the top and not right. On the other hand I'd always have worn a suit for a job interview in the past.
I'm sure I'm overthinking this but please let me know if I'm totally off the mark - it's a Zoom interview so bottom half probably not quite as important!