I took a large plastic bag (the ones made for gift wrapping baskets) and cut two holes in it for my dog’s front feet. Then I reinforced the holes with felt circles. I cut the end of the bag off so that the costume could be slid on to my dog.
To keep this pet costume on I used ribbon. I weaved it through both ends of the bag and one ties around her waste, the other ties around her neck. Then I stuffed the bag full of “jelly beans” or balloons. I used the balloons that they use to make balloon animals. I would blow it up a little and then tie it off on both ends and cut the “bean” off, then I’d repeat. Each individual balloon gave me 4-5 beans. Then I hand painted speckles on the balloons to resemble real Jelly Belly jelly beans.
For the hat, I used the excess from the bag. I cut out a strip of black construction paper and stapled it into a circular form. Then I stapled plastic pieces all around it. Then I stapled ribbon around to make it pretty. You could also use glue, but staples are more secure.
I printed off Jelly Belly logo and glued it to the inside of the back of the bag. That’s it!