In Pokemon Diamond/Pearl, where can I find a trainer who has a 'Cherrim'?

Question

I just need to SEE 'Cherrim' to fill my Sinnoh pokedex, but I cant be bothered waiting forever to catch a 'Cherubi' on a sweet honey tree then evolve it into a 'Cherrim'. I know that this pokemon can be found with a trainer in Sinnoh but I just dont know where.

Remember, I know how to CATCH one, but I dont want to, I just want to battle a trainer who has one so I can SEE it & get it's pokedex entry.

I have Diamond if that makes a difference

Answer 1

Ace Trainer Sharon on Route 221 has one. It's around level 30.