There are heaps of good tips for brows out there, but I've got some shape-specific hints for round faces like Rachel Bilson's to help you create greater balance and enhance the look of your entire face:

  • Don't be afraid of a higher arch. It lengthens your face.
  • Go more angular than curved at the peak of your brows; the hardness of the angle will add more overall facial definition.
  • Go for a slightly thinner brow—not crazy thin, just a little slimmer than natural—it makes a petite face look a bit more balanced. See how Rachel does it.
Source: WireImage