Here’s one more reason why we love Ellen DeGeneres – she sure knows how to pull off a prank. Her latest victim? Selena Gomez

In the spirit of Halloween and Selena's new move "Hotel Transylvania," Ellen scares Selena twice: once with a chainsaw-wielding attacker, and later with a vampire!

See Leatherface sneak attack her here!

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And check out Count Dracula spook her for the second time during the show. Her reaction is priceless!

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This isn’t the first time the talk show host has scared the living you know what out of her guests. Bethenny Frankel and Julia Roberts have both fallen victim to her scare tactics!

Check out this clip where Ellen gets former "Real Housewives of New York" star Bethenny Frankel to literally jump out of her seat and into the camera, as a masked "SCREAM" Ghostface pops out behind her in a photo booth!

And watch Ellen get Julia Roberts to jump two different times -- before and during the show!

Of course, not all of Ellen's scares are successful. Just watch as she tries to freak out Adam Levine here!