That is a beautiful dress. Amazing choice.
Well, a couple months ago I got a black fedora.
[My Fedora] (and yeah, that's me, plus a lot of photoshop for dramatic effect)
But I also want a brown panama like Indy's:

Yeah, I wear costumes for fun. But I'm an actor so that's okay.

These hats are expensive, though. I got a water proof crushable black wool felt short brimmed fedora. That one was about $40 plus shipping. Now a hat like Indy's would probably cost more, as it is a fine wool felt rather than a normal/medium grade. It's also a panama fedora rather than a traditional one (it's got a slightly larger brim) so the larger brim requires more material, probably making it a little more expensive. I would also have to request the hat maker shape it specifically like this.
Aaand that's your hat lesson for the day.