Anyone know what top this is?

Vially

The top in main photo, anyone know where I can find it?

https://www.daz3d.com/de-alice-for-genesis-8-female

and/or the tops in images 2 & 3 of this one.

https://www.daz3d.com/ravyn-character-and-hair-for-genesis-8-female-s

pwiecek

Unfortunately, the Ravyn question has been asked before with no real answer:

https://www.daz3d.com/forums/discussion/200436/what-are-the-outfits-used-in-the-ravyn-bundle-for-genesis-8-female-promo#latest

Chohole

AFAICR The answer for the Ravyn one  was that it was something 3DU made just for the promos, and it may eventually get released as a product.