I'll start here, because a Roaring 20's party on your own is not so much fun, so here are some on my favourite invites I have seen,
This is the fun part, and there is plenty of choice, but glamorous is the key.
Time to decorate your party venue, plenty of black and gold seems to be the answer here.
I imagine a lot of Champagne was flowing at the posh parties in the 20's and maybe some nibbles too.
If you have any money left over from hiring a band take a look at these entertainment ideas.