Rubie's Costume Pink Princess Child Costume, Medium Pink Princess costume dress features white fiber optic lights in the skirt Matching tiara included 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