Love backless new dress (5)

I believe the answer is:

adorn

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'dress' is the definition.
(I've seen this before)

I cannot understand how the rest of the clue works.

(Other definitions for adorn that I've seen before include "dress" , "Improve appearance" , "Attire" , "Deck" , "Beautify - decorate - enhance" .)

I've seen this clue in The Independent.

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