In one of the classic Flintstones cartoom, there is a costume contest at the local Grand Order of Water Buffalosi which Fred is determined to win. Fred desses as a space man, unfortunately there is publicity stunt for a band called the Way-Outs goes horrible wrong. The people in Bedrock think there is an alien invasion which leads to Fred and the Way-Outs being assaulted repeatedly. Wilma was dressed as a bunny girl.

Wilma Flintstone (maiden name Pebble or Slaghoople) is a fictional character in the television animated series The Flintstones. She is the beautiful red-headed wife of caveman Fred Flintstone, daughter of Pearl Slaghoople, mother of Pebbles Flintstone and grandmother to Roxy and Chip Rubble. Her best friends were her next door neighbors, Betty and Barney Rubble.
Wilma's personality was based on that of Alice Kramden, wife of Ralph Kramden on the 1950s television series The Honeymooners. Thus, much like Alice, Wilma played the strong-willed, level-headed person in her marriage, often criticizing Fred for pursuing his various ill-fated schemes. Wilma would also often be the one to bail out Fred when one of his schemes landed him in trouble