The models are in "fetish looks": The models are dressed in a sexually suggestive way. More specifically, they are dressed in a way that reminds the viewer of sexual fetishes. "Fierce" is a term that conveys strength and glamor together. "With anatomical Frankenstein embellishments": The outfits have designs related to sewn-on body parts. This is a vague description that could be interpreted in different ways, but in this context I would guess that "anatomical" means sexual organs. "The show fused fierce fetish looks with anatomical Frankenstein embellishments": The show had outfits that mixed glamorous fetish styles with additional designs that focus on the human body."

A cool and bold look that has a sexually provocative appeal probably decorated with items like nails and chains, for example, that are associated with the man made monster, Frankenstein. This is only my interpretation so you may receive better descriptions.

Agreed with Joyce. It's not an "every day" term that's thrown about. If you don't recognise the phrase, just piece together the words separately and whatever you feel that means, it probably does.

I fetish is when you have a sexual desire for an object or non body part. I think in this case they tried to sexualise the men in the chambers by giving them decorative details that had to do with Frankenstein :) hope this answers your question!