There is a girl at my work who often squishes her boobs in to my arm. In a similar situation as the OP.
I can say with out a doubt that this girl is NOT attracted to me.
Except in my case I tell her: ‘Ya’ know, your boobs are touching my arm.’
To which she responds: “LOL, shut up Shakes!”
This is an important part of where you’re coming from. Don’t take cues from rom-coms, sit-coms or pornos. Subtly back away from the boob and don’t make excuses to have her come over so you can build tension. Be professional and do your job.
Or if you don’t care too much about the job, have sex with her after hours on the desk. “Was that wrong? Should I not have done that? I tell you, I gotta plead ignorance on this thing, because if anyone had said anything to me at all when I first started here that that sort of thing is frowned upon… you know, because I’ve worked in a lot of offices, and I tell you, people do that all the time.”
I think I need pictures of OP to really judge if this girl is flirting or not, you know, for scientific purposes.
What country did you move from and to? If I may ask? Some chicks are suckers for foreign guys and foreign accents.
Leprechauns?
OMG, that’s it! She’s after your Lucky Charms, man.
(Good catch, elfkin477, you may have solved this one.)
LOL! :L :L I move to AUS, and my name says where I came from 
Unless you’re independently wealthy and this job is just something to get you out of the house for 40 hours a week … don’t go there. Yes, some people do meet “the one” at work. I’m willing to wager more people have ruined their careers over office tail than have found a spouse, though.
FWIW, yeah, she probably digs you.
Did you move across the globe specifically for this job? If so, you need to back away immediately. There are plenty of hot girls in Australia - go bang one of the ones that can’t get you fired.
That’s a phrase that has become rather unfashionable for the last couple of months…
Thinking about it, it just sounds like she is a huge flirt and is having fun flirting with the new Irish guy at work. Don’t look in to it any more than that. Plain and simple. Look for a relationship outside of work. Plenty of hotties in Australia.