Make a real splash with the Barbie Dreamtopia Rainbow Lights Mermaid Doll. Dip this Barbie doll into water to see her mermaid tail glimmer with colorful lights inspired by a sparkling rainbow. Press the button in the doll's necklace to switch her to 'on' mode, and dip her into the tub or pool to activate the light show. Rainbow fins, a pearl-decorated belt, pink-streaked hair and a princess tiara complete the head-to-toe magical mermaid look. Doll cannot stand or swim alone.