Awww... this is heartwarming. :)
Does your host/hostess know your background? I find myself swooping in and diverting attention when people ask my boyfriend questions with respect to politics or holidays in social situations.
If you're the new gal in the group, they'll want to get to know you. Stay with safe subjects... your job, restaurants you've never been to... "has anyone been to that new restaurant called...X? What's it like?"
I love LG's suggestion too. That's safe. :)
If you have kids, mention them - if not, ask another about theirs.
You'll be fine!