New Year's Eve murder / Leslie Meier.

Enhanced descriptions from Syndetics:

As excited as Elizabeth is to hit the Big Apple, Lucy's less thrilled to be heading straight into post-holiday shopping crowds in the middle of a flu epidemic. But, Elizabeth has won mother/daughter winter makeovers in Manhattan from Jolie magazine and Lucy is in. The pampering is nice (never underestimate the transformative powers of a $500 haircut) and the glitz and glamour of haute couture is bizarrely fascinating, but bitterness and aggression lurk behind the Jolie's hipper-than-thou faade. And things turn downright ugly when self-absorbed fashion editor Nadine Nelson falls mysteriously ill and then dies. But this Manhattan murder mystery hits too close to home when Elizabeth gets rushed to the hospital with symptoms that are disturbingly similar to Nadine's. Now, it's up to Lucy to dress down a killer before the ball drops in Times Square...