For the 2018 movie, directed by Cooper, Gaga won her maiden Academy Award. The film also received a best picture nomination and grossed USD 436 million worldwide.
'Bullet Train' follows a group of assassins who get on the same train, each tasked with a different mission.
'House of Gucci' also starring Adam Driver, Al Pacino and Jared Leto is slated to be released in the US on November 24 by United Artists Releasing.
The dates had been moved from 2020 to 2021, and now presumably 2022. Ticketmaster lists the dates as "postponed" with no rescheduled dates.
Gaga said she was later diagnosed with PTSD after going to the hospital for chronic pain.
The Grammy-winning star took to her Instagram handle and shared a snap from the sets of 'House of Gucci' that sees her pounding fists with the film's director Ridley Scott.
The Grammy-winning singer reacted to her album's newfound popularity with a sweet message on Twitter.
Gaga and Carino, a talent agent, have kept their relationship low-key from the beginning. They had started dating in January 2017.
The two had also admitted that they bonded over their shared Italian roots on the sets of 'A Star is Born'.
It's the third remake of the original 1937 film, following the 1954 version with Judy Garland and James Mason, and the more rocking 1976 version, with Barbra Streisand and Kris Kristofferson.