Stars' Prettiest Spring Hairstyles

Dianna Agron, Rihanna, Emma Watson and more show off the most lust-worthy lock looks of the season

6 of 8

CENTER-PART CURLS

Middle parts can be tricky to pull off (they can sometimes seem dowdy and flat), but as Olivia Palermo demonstrates, waves make all the difference. Use a curling iron for shiny loose curls – and avoid volumizing products to minimize the dreaded "triangle effect."