Where to find additional invitation envelopes in L.A?

Hi all,

I need some additional envelopes and I don't want to re-order from the gal who designed our invitations because it will take too long. Where can I get some nice envelopes in or around L.A? I love in Redondo Beach. I was thinking of Paper Source but it's a bit of a drive for me. Any recommendations? I tried Office Depot and they didn't have the right size. I'm not having much luck with Googling. Any locals here reading this I would greatly appreciate any suggestions. Thanks!

There is a FedEx Kinkos in Redondo, also there is a Party City nearby. There is a Papryus in Manhattan beach.

In the South Bay Gallaria there is a Halmark store, and American Greetings