[Facts] Re: English pronunciations of Andrea
I'm in the US know many Andreas pronounced AN-dree-a, and one pronounced AHN-dree-a. Also one Aundrea (awn-DRAY-a).
I haven't seen the movie, but the ahn-DRAY-a pronunciation fits for a character in the fashion industry or someone putting on airs. AN-dree-a sounds more like the girl next door.
As with other names like Michelle or Jacqueline, the continental pronunciation is more rare in the US and sounds more glamorous.