Sean 'Diddy' Combs has reportedly lost a huge amount of weight behind bars.

The rapper, 55, has been behind bars at the notoriously tough Metropolitan Detention Center in New York City awaiting trial on charges including sex trafficking and racketeering, and he has been seen looking shockingly thin at the latest hearing in his case, according to a journalist who attended the proceeding.

'Law and Crime' reporter Elizabeth Millner was quoted by Page Six saying after the hearing: "He appeared just astonishingly thinner, which you can expect (from him being) inside a federal detention centre for a couple of months now.

"A lot different from the luxury lifestyle that he was living before, but he appeared very noticeably thinner and maybe being locked up in detention is starting to wear on him."

The journalist added Combs' appearance was starkly different from how he looked in a video that surfaced online of him playing hacky sack in Central Park days before he was arrested on 16 September.

She added the rapper's hair has also changed, saying: "He appeared greyer a little bit."

Cameras were not allowed inside the courtroom during Combs' appearance.

A source close to the jailed Bad Boy Records founder insisted to Page Six he is "fit, healthy and fully focused on his defence".

They added: "He has been very active, remains in good spirits, and, as always, he was happy to see his children."

Page Six added it has been told he is also "working out regularly".

Combs has been denied bail three times while in federal custody.

Following a months-long investigation by authorities, he was charged with sex trafficking, racketeering and transportation to engage in prostitution - all of which he denies - and a trial date has been set for 5 May, 2025.

Combs was placed on suicide watch during his first week in custody, but was taken off of it shortly after, with his lawyer claiming his client was "focused and very strong."

His attorney Marc Agnifilo previously admitted food is the "roughest part" of Combs' imprisonment.