In Pokémon Let’s Go Pikachu and Let’s Go Eevee, you get to choose between Pikachu or Eevee as your partner Pokémon at the start of your adventure. However, it turns out that these starters are Shiny locked, which means they can’t be Shiny Pokémon. You can rest assured that it is possible to find Shiny Pikachu and Shiny Eevee in the wild, so be sure to keep an eye out for them.
Pikachu and Eevee starters are Shiny locked in Pokémon Let’s Go Pikachu and Let’s Go Eevee