So you have a super cute kid, and you really want to mess with people’s minds. You go ahead and create a Happy Mutant 3-Armed Baby Costume, because when it's Halloween, everyone gets into it--even your 4-month-old.

To create this costume yourself, you will need one super cute baby (preferably your own), two onesies, and a spare doll’s arm. Basically you attach the spare arm (which is inside the extra onesie’s spare sleeve) onto the onesie the your little mutant will be wearing. Check out the gallery for more shots of the Happy Mutant 3-Armed Baby Costume.