Watch the episode where Fred and Barney enter Pebbles into the beauty contest. Go to the part where it's almost the talent portion. Backstage, Pebbles is still in her green-leaf bathing suit. Then there's a scene with Wilma and Betty. After that it goes back to Fred, Barney and Pebbles... who is in her normal clothes that she always wears. She walks out on stage. Then, when she's with Dino on stage, she is back in her green-leaf bathing suit. For a young girl, she sure is a quick changer!