We couldn't be more excited that tonight is the newest Pretty Little Liars Halloween special episode! We might even be more pumped for the show than we are for actual Halloween night, and it's all because of the over-the-top costumes the characters wear on the show. Who could forget Ali and Jenna's diva moment Gaga-off or Adam Lambert's awesome guest appearance on previous years' episodes?!
Click through the gallery above to see the coolest costumes from the past PLL Halloween specials. Which costumes were your faves? Tell us below!