Sean “Diddy” Combs’ federal sex-trafficking trial opening arguments and witness testimonies begin Monday in New York City.

We’re in Manhattan Federal Court following all the developments as alleged victims are set to testify, including his former longtime girlfriend, R&B singer Cassie Ventura, whom Combs was seen beating and kicking in sickening 2016 hotel surveillance video released a year ago.

The trial is not televised because cameras are prohibited inside this courthouse — so watch this space for all the latest updates.

Combs, 55, has pleaded not guilty to one count of racketeering conspiracy, two counts of sex trafficking by force, fraud or coercion, and two counts of transportation to engage in prostitution.

He faces life in prison if convicted.

This live blog has ended.Follow The Post’s ongoing live updates from the Diddy trial here.