DJ rebranded site during day before party (6)

I believe the answer is:

tuxedo

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

I cannot understand how the rest of the clue works.

(Other definitions for tuxedo that I've seen before include "American dinner jacket" , "An American monkey-suit" , "Dinner jacket (US)" , "American DJ" , "Garment" .)

I've seen this clue in The Independent.

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