New York Fashion Week wouldn't be complete without Paris and Nicky Hilton!

The blonde heiresses arrived in NYC last week, and have been hitting up fashion shows non-stop.

Princess P Tweeted the above photo and the following: "Love this pic of my sis @NickyHilton and I having a blast in NY #FashionWeek. So much fun!"

We're loving Paris' long printed dress and Nicky's leather shorts. These two are such fashionistas!