Edirol Orchestral - same thing I used on the California Girls thing a while back. It's a VST plugin, and amazingly not sampled sounds - all synthetic! The violins sound a bit dodgy, but the horns! Dear god....
It's mostly her voice that gets that sound, she's so good! It's her favourite song to sing. We're talking about doing more, but that won't be for a while. Just happy to have done this