It’s the most spooktacular time of the year, Halloween, and Arrow star Colton Haynes took advantage of the scary holiday by transforming into his dream costume from the hit movie Shrek. Haynes dressed up as the ogre’s leading lady, Princess Fiona, and he even sported her not so flattering green gown. The TV star was so excited about the transformation that he documented every moment of it on Instagram. Check out the video to see Colton Haynes make his transformation.