Nude Alexandra Schepisi scene from Underbelly s01e10 (2008). Well, it's not exactly nude, but she does show off her natural breasts quite a bit. We see this dude playing around with her nipples, as if trying to find the right frequency on his radio. Don't ever do this in real life, by the way.
There are heaps more that you could put on here from all the underbelly series