Lovely floofies ! Having done a lot of research on white cattleyas lately, I agree with Ron. I think it could be C. Queen sirkhit as it is a very common clone in Thailand. C. pornthip (Never search this name when using a computer at work, you get very different results than expected and the consequences can be very very embarrassing) anyways coming back to it, it is much more fuller and the tepals are more blunt and not crispy sharp.