Can you get different clothes?

[General SnuSnu]

Apart from the character creation stuff, i don't like the choices much. Do you buy/unlock more

[Boneyard Bob]

You can sometimes find clothing on defeated enemies, and there is at least one guy in AZ (Canyon of Titan, IIRC) that sells clothes. Other than that, there's not much in this game for people who are into the paper doll aspect.

EDIT: Also, save early and save often, as there are some rare effects that can destroy your clothes and leave your main characters running around in their undies.

[HoroSaga]

They did put a lot of different cosmetic clothing items in the game, but for some reason they forgot to actually place clothing vendors throughout most of the game. It honestly feels like a pretty big oversight.

As Boneyard Bob stated, there is a single clothing vendor just outside the Temple of Titan, but he only sells the Three Amigos clothing set, and nothing else.

For most clothing items, you have to rely on random chance and hope you find something usable in random loot containers or enemy inventories. I suppose you could also use a hex editor to change your clothing items manually, but that would require a lot of patience.