The 32-year-old actress debuted the new look in an Instagram post on Sunday.
"Yea," Duff captioned the photo of herself, alongside the shoulder-shrugging emoji.
"Well honestly, it fits you," one user commented, while another seemed inspired by Duff wrote, "Me next."
Although the "So Yesterday" singer's new 'do appears freshly colored, her Instagram Stories posted that same day revealed her brown roots. Whether or not she will keep up the vibrant blend of turquoise and aqua on her shoulder-length bob is unknown, but her almost 15 million followers seem to dig the new look.
"Hi guys," Duff greeted her fans as her one-year-old daughter Banks Violet Bair plays in a bathtub in the background. "I wanted to wish everyone a very Happy Easter. I know these are tough circumstances right now, but I hope you got the chance to smile or laugh a couple times today."