It may not be easy, but Katy Perry has wanted to be green -- "slime green" -- for a while now.

"It's spring time and I think I'm ready to freshen up my look. I'm excited, I just hope my hair doesn't fall out," the newly single singer said last week.

Lo and behold, she's gone and done it, debuting a perfectly puce head of hair -- save for the dark bangs -- on Instagram late yesterday. "SLIME GREEN FOR SPRING by my bb's @neeenaboo & @brantmayfield at the @mcmillansalon."

READ: The Best At-Home Hair Coloring Tips

Never one to lag in the changing your looks department, Kelly Osborne has cut off some of her purple hair and even added some cool shaved side action.

"Here is one pic of my new hair cut!!! What do you guys think? I'm also sporting the #SpringTrend and have no bottom mascara on! It looks weird I [love] it!!! check out," the E! Television host Instagrammed late Monday.

And, not to be left in the dust, Kristen Stewart has also submitted to quite the change up. The newly minted Chanel model debuted decidedly orange hair.

The 23-year-old, who's prepping to start production on a new action movie called "American Ultra," debuted her new color on hair salon Maison de Cheveux's Instagram page.