Proving that revenge is a dish best served cold, the Orange is the New Black star waited a few days before returning the favor. Her weapon of choice: Photos of herself. Dobrev returned to her trailer to find it covered in photos of her co-star. Yes, that's Radiohead's "Creep" playing in the background.
"The war has begun," Dobrev posted on social media. We can hardly wait. Keep it clean, gals.