Wilma Flintstone (maiden name Pebble or Slaghoople—see below) is a fictional character in the television animated series The xtrmtracker.com 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. Get your Flintstone costumes from the retro tv show The Flintstones in kids, and sexy Flintstone costumes xtrmtracker.com Pebbles Flintstone Costumes; Wilma. The Flintstones Pebbles Costume - One Color - Small. Amazon's Choice for "flintstones pebbles" it's Pebbles Flintstone. Fred and Wilma's little.