We had no idea either, but apparently this blonde event planner and self-styled DJ groupie is BFF with DJ Cassidy and Diddy (pictured below at LAST year's birthday party at Mr.West.) Also, she seems to party. A lot. After what seems to have been a debauched night at Juliet, Rosenblum was raring to go on Thursday where she partied at Greenhouse, where despite being "" craaazy tired" she managed to party until two am. Obviously we can learn a lot from Jessica Rosenblum.
Happy Birthday J-Rose (Can we call you J-Rose?) We can only hope to be partying as hard when we're 43 32 18?
[All photos via Kirillwashere.com]