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Not Even ‘A’ Saw Ashley Benson’s Hair Change Coming

The ‘Pretty Little Liars’ star rocks a new ’do for her birthday

What do you do when a psychopathic killer (or killers) is hunting you down? Go incognito, of course.

Ashley Benson ditched her blonde hair and joined the ever-growing list of celebs who've dyed their hair pink, including Hilary Duff, Bella Thorne, and Ariana Grande. The Pretty Little Liars star revealed her new 'do on Instagram Sunday (December 18). "🍳🍳 when you let @findyourCalifornia do this," Benson captioned, while rocking cat ears.

The actress celebrated her 27th birthday Sunday with pals Marianne Fonseca, Hailey Baldwin, and Aric Laferriere, the latter writing, “My best friend. My little sister. @itsashbenzo wouldn't know what I would do without her” on Instagram.

Benson's birthday was filled with heartwarming messages from her PLL family, including a sweet note from Tyler Blackburn, who plays Benson's on-again/off-again boyfriend, Caleb, on the show. “HBD to the baddest bitch in the game. You are a beautiful human inside and out,” Blackburn gushed. “Thank you for bringing tears to my eyes with laughter that I'll hold in my heart forever. ❤️ you always and wishing you the best day babe!! 🎂🍰🎉.”

Blackburn posted a cute throwback pic of the duo — but now he needs to add another one showing off her bright pink hair. ‘A’ won't know what hit him (or her).