Speaking to Sky News at the UK premiere of Joker: Folie à Deux, she admitted: "I don't really know if I did because I've made a whole record about her."

As cinemagoers prepare to see the Oscar-winning actress star as the "true love" to Joaquin Phoenix's Joker, the Poker Face singer announced she's releasing a 13-song companion album to the film.

"I think the whole experience inspired me through and through," Lady Gaga admitted.

"It was so amazing to get to know this character through music, through the script, through dance, through all this tremendous collaboration."

After 2019's Joker won two Oscars and made over $1bn worldwide at the box office, filmmaker Todd Phillips and his leading man set out - in reprising the troubled dual personality of Arthur Fleck/Joker - to take a different approach.

While the character is institutionalised as he awaits trial, incorporating his fantasy life involved Phoenix mastering singing and tap dancing this time around.

"We asked each other for tips all the time," Gaga said about Phoenix having to sing live on set.

"We were constantly like 'what do you think of this?' back and forth... I loved working with Joaquin.

"There was never a dull day at the office. It was always super interesting, it was fun.

"As dark as the world of Joker is, we laughed a lot on set and we were always being as organic as possible."

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While Phoenix did not stop for interviews on the red carpet, he has previously spoken of how he found Gaga "to be just without ego, and with such a fierce determination to just get right in with us….she was just really game for anything".

The movie premiered at the Venice Film Festival earlier this month to mixed reviews but soon we will find out who has the last laugh - the Joker's cast or its critics.

Joker: Folie à Deux is out in UK cinemas on 4 October.