Pretty-N-Pink Light Up Costume, Large 100% Polyester Long pink costume dress with puffy sleeves and twinkle lights in the skirt Accessories available separately Twinkle lights activated by push button, intermittent twinkles; replaceable 1.5 volt button cell battery NOTE: Costume sizes are different from clothing sizes; review the Rubie's size chart when selecting a size and consider buying the next size up if you are at the top of a size range Rubie's offers a range of Twinkle costume dresses, put together a group of twinkling for a fun costume look