Here I got a better answer to the question of "Why Jennifer Weiner's books are so darn popular." This novel was far more engaging than Goodnight Nobody, with more in-depth characterization and an interesting mix of four women's stories of first-time motherhood, each woven together as they become friends and share experiences. The writing was good enough and the story compelling enough that I was able to overlook the occasional annoying foray into clothing descriptions.
In brief, this novel is about the pregnancies and first months of motherhood of four people: Becky (the fat one), Lia (the sad one), Ayinde (the exotic, rich one) and Kelly (the control freak). Yes, I'm being tongue-in-cheek - there's more to these characters than a simple label, and over the course of the novel they have a range of experiences that help to make them more and more "real". Each woman struggles with some aspect of becoming a mother for the first time, and they deal with their life tragedies and challenges by drawing on each other's friendship. There's nothing deep and Naomi-Wolf-ish here, just a simple, charming tale of joy, sadness and friendship. If you're thinking you might like to try this writer and are not averse to "mommy lit", Little Earthquakes wouldn't be the worst place to start.