TERENCE CRAWFORD showed off his incredible body transformation - just days out from fighting Canelo Alvarez.

Crawford - who started his career winning title in the 135lb lightweight title - faces Canelo next Saturday in Las Vegas.

And he jumps 14lbs from his last fight to challenge for Canelo's undisputed 168lb super-middleweight titles.

Crawford has been out of the ring for over a year - and has evidently put on muscle ahead of the mega-bout.

The unbeaten American posed shirtless - showing off his hulking abs and biceps as one fan said: "Canelo in trouble."

Another commented: "Big fella look terrifying."

A third posted: "SHREDDED!"

Crawford's last fight was at 154lbs - beating Israil Madrimov for the WBA title.

It comes after also winning undisputed titles at 140lbs and 147lbs.

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