You should totally watch it (for nostaligia's sake) ! Everyone but Naruto and Sakura have their personality reversed in this movie ! It's very interesting because Naruto and Sakura get to experiment each other's way of living. This movie has been written by Kishimoto himself, so it is the most popular NARUTO movie so far.
Yeeaaahhh ! That's sooo cute ♥ ! I dunno, maybe that's her night underwear ?