Party at 611 Tenth, 1955

[RStar]

And to think all of those people could have gone to Disneyland's opening.

I would have said the party was New Years, but the hats and decorations say otherwise (normally a "55" would appear on something). It could be a birthday party, but it looks rather formal, so perhaps a wedding announcement party, or anniversary?

And was it that common to wear loud socks then??