Hopefully it's just because it was the first short trailer, so they just used default characters. But I think they would have shown at least a little something if there was a feature, so maybe not. That would be incredibly disappointing.
Okay, I rolled a 14. What's that mean? Hsu That you're a cheater. This is a 12-sided die. Chan
She's definitely wearing the same clothes through out the trailer. The mirror is an odd scene, but the fact there was no mention of customisation makes me think it probably isn't in. That seems like something they'd really play up as a big new feature.