In SoulSilver and HeartGold when you the Battle Frontier in the Johto, there are five builds. If you go to the Battle Castle, and challenge it there is a "princess" inside. Her name is Caitlin.
If you get to the Pokémon League in Black/White 1 & 2, you can challenge a lady named Caitlin.
A while ago, I thought they were the same person. Here's why:
- Long hair
- Some eye color
- They both were white dresses with a pink skirt
- They both were pink shoes