Leighton Meester Style?

I love Leighton Meester's hair, makeup, and clothing style (think Blair Waldorf). I already have the headband thing down; headbands have been my favorite hair accessory since as long as I can think. My hair is a few shades darker than Leighton's and I also have brown eyes. I don't want to change my personality or anything, so don't start about the "be yourself" stuff since I already love my style XD I just wanted to know what some clothes and makeup must-haves are. Thank u <3