Ben Affleck has revealed his increasing bulk for his role as Batman in the upcoming Batman v Superman: Dawn of Justice.

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Ben Affleck solo movie The Batman releasing in 2019, report claims

The 41-year-old actor, who was pictured in full Batsuit back in May, has reportedly put on 40lbs after following an eye-watering 5,000-calories-a-day diet.

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The star was spotted wearing a tight blue T-shirt that clung to his toned torso as he ran errands in Los Angeles recently.

He was also sporting what are said to be 17-inch biceps, which he's apparently managed to pump up and sculpt with six gym sessions a week, lasting three to four hours each, over the last five months.

The Man of Steel sequel will mark the first time the Dark Knight, Superman and Wonder Woman have appeared in a live-action movie together.

Henry Cavill will reprise his role as Superman, with Fast & Furious 6's Gal Gadot as the iconic DC heroine.

Jesse Eisenberg takes on the role of Lex Luthor, Jeremy Irons will play Bruce Wayne's butler Alfred Pennyworth, and Ray Fisher is Cyborg.

Batman v Superman: Dawn of Justice will be released on April 30, 2016 in the UK and May 6, 2016 in the US.

Gallery - all the actors who've played Batman:

Batman actors: A history in pictures

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