What defines "chick-lit"?

Y'see, I've been reading The Sunday Philosophy Club (JX Note: To page 144, said club not appearing in this book), and it's an interesting, if meandering, read. When I commented how little actually happens after ripping through the first 60 pages, my wife wondered if it was "too chick-lit" for me. To which I responded, I'm enjoying it, it's just that not much is happening. The author allows his (and his protagonist's) mind to wander over all sorts of digressions at the proverbial drop of a hat and only occasionally checks back in on the mystery.

Is this what "chick-lit" is? (For lack of a better term) Unfocused storytelling? Consideration and evaluation of tangentially related topics to the main flow of conversation? I don't know that I buy that.