Yes, Clefairy can be shiny in Pokémon Go! The Clefairy family doesn’t see any use in PvE content (raids and gyms), but Clefable does see some use in PvP Ultra League for those interested.

Shiny Pokémon are coming to Pokémon TCG Pocket as part of the game's next themed booster pack, Shining Revelry, which launches next week on Thursday, 27th March. Cards featured in Pokémon TCG ...