While we're always excited to see trends migrate from the runway to the red carpet to celeb street style, there are times when even the most stylish fashionista's sartorial choices are off the mark. We've rounded up the best and worst celebrity looks of the week from Angelina Jolie and Brad Pitt to Katie Holmes and Naomi Watts. Some stars hit it out of the park, like Khloe Kardashian in a stunning, slimming, and simple white dress, and others, in the case of One Direction's Harry Styles, look as if they just rolled out of bed.

Click through the gallery to see the the best, worst, and downright confusing celeb looks in this week's Fab or Flop!