Two-year-old Maya Hwang wore the epic costume which was designed by her mother, Krystel.
The stay-at-home mum spent two days making the costume, which makes it look like the child is carrying her own severed head.
The floral dress has an opening in the chest which allows Maya's head to poke through.
An extension on the back of the dress creates the appearance of a ghoul whose head has been chopped off.
Older sister Charlie, aged six, then walks alongside her while holding a knife - and of course an empty pumpkin basket to collect trick-or-treat gifts.
Little Maya won a competition at a school in Paraaaque City, Philippines, for the best costume.
And a video of them bringing terror to their home town of South Bay Village has been viewed more than 20 million times.
Proud mum Krystel, who loves making costumes, said: "My daughter looks so sweet.
"Everybody loves her costume. There's also a place in the top of the dress for putting sweets.
"I used mostly duct tape and paper to make it and both my daughters were actually involved in the creation of their costumes.
"They watch YouTube, and so Halloween videos are going viral these days, so they know. I actually get ideas from them.
"They have an input. You'd be surprised. I didn't have a hard time dressing Maya up because she saw me make it. I like that they're not scared of it, they know it's just makeup.
"You know, Halloween is really for fun. I'm not pushing my kids toward darkness. It's a chance for us to have fun. I get ideas from them, and they get to be creative."