Louise Rennison's Georgia Nicholson series: often hilarious, charmingly British, and all-around awesome.1
And, it turns out, preempted by almost a century.
Which is not to imply in any way that Georgia was in any way copied from her American predecessor. This is just one of those awesome things you can find poking around Project Gutenberg.
Bab: A Sub-Deb is one of the several zillion2 Mary Roberts Rinehart books available from PG, and by the time I was halfway through, I realized that Bab was so totally what Georgia would have been if she'd been a not-quite-flapper in 1917 New York.
And it features its own version of Dave the Laugh.
Go, download a copy, and tell me I'm not the only one who sees the parallels.
1In small doses. There is a limit to how much Georgia one can read before reaching for the nearest David McCullough.
2 By which I mean somewhere between 20 and 30. Did you think I was actually going to count them?