The Once Upon A Time In Hollywood co-stars waded into one of film's biggest debates, which still sparks controversy over 20 years after the James Cameron-directed film was released, during an interview with MTV.
The host, Josh Horowitz, asked DiCaprio whether he thought Jack could actually have fit on the door that was keeping Kate Winslet's Rose from dying from the freezing cold in the icy waters.
DiCaprio did not seem to want to answer the age-old question and simply shook his head in mock disappointment.
But his co-stars were not going to walk out of the room without an answer, with Robbie exclaiming: "Oh my god, I thought about it. I remember bawling my eyes out!”
The actress sounded as heartbroken as the millions of fans who often recall the moment when Rose let Jack float away after dying of hypothermia.
But her Wolf Of Wall Street co-star star was having none of it and would only say "I have no comment," while wearing a massive grin on his face.
Pitt was then asked by Horowitz for his opinion, to which he replied: "That is fun. Well I’m going to go back and look now, certainly."
With Pitt and Robbie now thinking back, DiCaprio smirked as they agreed that it was “the biggest controversy in cinema history.”
Robbie then took over the interview and asked: "Did you mention it at the time, should we make the door bigger?”
Leonardo was unmoved would only reply: "Like I said I have no comment."
"Could you? Could you squeeze in?” Brad said looking for an answer from his co-star.
At this point DiCaprio appeared to find the hounding hilarious but stayed firm with his: “No comment.”
Titanic was released in 1997 and was based on the tragic real-life story of the RMS Titanic sinking of 1912.
The ship was a British passenger liner that sank in the North Atlantic Ocean after hitting an iceberg during her maiden voyage from Southampton to New York City.