Sex and the City: twenty-something girls vs. thirty-something women

What with Charlotte pretending to be 27 to keep the attention of a younger man and Samantha feeling displaced by her ballsy, ambitious assistant, the ladies' stay at a Hamptons timeshare is marked by the unavoidable observation of the differences between themselves and their 20-something counterparts - culminating in Carrie's devastating discovery that Big is back from Paris and now dating a woman younger than she.