• "T2 Trainspotting" releases in theaters on Jan. 27, 2017 at the United Kingdom, and on Feb. 3, 2017 at the United States.

"T2 Trainspotting" releases in theaters on Jan. 27, 2017 at the United Kingdom, and on Feb. 3, 2017 at the United States. (Photo : YouTube/Sony Pictures Releasing UK)

"Trainspotting" main stars Ewan McGregor and Roberty Carlye shared their thoughts on the film's return after more than 20 years when it first debuted to theaters. While it has been a trend nowadays of producing sequels of original films which aired years ago, the results are usually well-received by movie-goers.

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The follow-up to the 1996 "Trainspotting" reunited original cast Renton (Ewan McGregor), Begbie (Robert Carlyle), Spud (Ewen Bremner) and Sick Boy (Johnny Lee Miller). During an interview with Empire, these main stars shared what it felt like returning to shoot a sequel.

Director Danny Boyle and the entire cast admitted returning to film a second installment was a big deal. Carlyle was bold to say he was crying the first time he read the script. He also recalled the whole cast and crew were emotional.

He said four of them, McGregor, Bremner, Miller and him, including Boyle once again felt the emotional connection to their characters. "But that first read - I was speaking to Ewan McGregor, saying, 'I cannae believe I'm feeling like this.' I've never cried when I've read a screenplay before. Ever," Carlyle recollected.

Playing again as Renton was a nervous experience for McGregor. But when he started acting as the character again, the 45-year old actor was more than relaxed.

He recalled that as soon as he put on the Adidas, he already became comfortable to play the role. He also pointed out the similarity between him and the character he portrayed.

While Renton has not seen his friends for years, McGregor had not been in touch with Boyle after the first film came out. He also noted how he and his character both messed up in life and that they are now both coming back in the "Trainspotting" sequel.

Meanwhile, "Trainspotting" author Irvine Welsh revealed in an interview with NME that "T2 Trainspotting" was able to manage the complexity of the elements of both the first and second book. The author even said the follow-up is an even better movie than the original.

"Trainspotting 2" will hit theaters on Jan. 27, 2017 in the United Kingdom and on Feb. 3, 2017 in the United States. Watch the film's trailer in the video below.