Pebbles baby toddler costume, Flintstones. Boutique style Pebbles Halloween cosplay costume - outfit. Flintstones costume for baby girls and toddlers. Girls newborn, Infants and toddler Pebbles Halloween costume. Sizes newborn to size 4 available. This listing includes the top and bottoms and you can choose to add on a bone headband or hair clip if you want.