But fans and Twitter followers seem to have a different description for it: Amanda Bynes-esque. If you'll remember, the actress-turned-troubled-celeb sported nearly the same exact shade of blue as Duff when she was going through her court hearings in the summer of 2013.
Since Duff has recently made her divorce official and is clearly enjoying being back on the market, some fans are starting to fear she may be on the path of a downward spiral like seems to be such a common pattern with former Disney starlets.
@HilaryDuff YOU TAKE NAKED PHOTOS AND YOU CHANGE YOUR HAIR COLOR LIKE A DRUG KILLER— GeneralDuff.28 (@General_Duff_28) March 18, 2015
I'm really not handling Hilary Duff's new blue hair well at all.— Jenna Fratello (@jennafratello) March 18, 2015
@KVJShow Hilary Duff has been posting bikini photos and just colored her hair blue. Can we predict the new Amanda Bynes?— Nick Piazza (@nickpizazz) March 18, 2015
Duff also drew comparisons to Kylie Jenner, who went with a teal ombré last year.
But Duff has always had a good-girl reputation and she said she worked hard to maintain it during a recent interview with Cosmopolitan for their April 2015 issue. Hair color isn't going to negate her flawless transition from child star to mature adult.
And Duff is loving the change, which she gushed about on Instagram.
We say it's spring and she's young so bring on the fun hair colors! Duff's mermaid blue statement may be bold, but it's just hair, people.
And you'll see personalized content just for you whenever you click the My Feed .
SheKnows is making some changes!