Charli xcx didn't feel it was necessary to put out a Brat tour documentary, as it's an oversaturated market.

The Von Dutch singer's rival Taylor Swift announced this week that her own six-part docuseries, The End of an Era, chronicling The Eras Tour, is heading to Disney+.

And, in a new magazine interview conducted before Taylor's announcement, Charli confessed she's not a fan of the format.

She told Vanity Fair: "I feel like my problem with a lot of musician documentaries is it often shows the musician coming up against some kind of opposition and eventually overcoming it to be the hero. And that's just not been my experience, you know? Maybe it has been a lot of other people's, and that's awesome."

Charli and Taylor are assumed to have bad blood after fans speculated Taylor's The Life of a Showgirl song Actually Romantic is a diss song about the Boom Clap hitmaker.

However. she's staying tight-lipped on whether the pair are locked in a feud, having "declined to comment" to Vanity Fair.

Taylor has also not named the individual on the track - whom she brands "boring Barbie" - during her press rounds for her latest album.

The title is eyebrow-raisingly similar to Charli's Brat song Everything is Romantic.

Taylor dated The 1975 frontman Matty Healy, who is the bandmate of Charli's husband George Daniel, and fans believe Actually Romantic takes shots at her Reputation Tour support act.

Charli's Brat song Sympathy is a Knife came first and is rumoured to be a Taylor diss song, with the British star seemingly wishing that Taylor and Matty split up on the line: "Don't wanna see her backstage at my boyfriend's show / Fingers crossed behind my back / I hope they break up quick."

And, many fans believe Taylor has retaliated on the new song.

She sings on Actually Romantic: "I heard you call me 'Boring Barbie' when the coke's got you brave / High-fived my ex and then you said you're glad he ghosted me / Wrote me a song saying it makes you sick to see my face / Some people might be offended…"

In the chorus, she fires off "…But it's actually sweet, all the time you've spent on me / It's honestly wild, all the effort you've put in / It's actually romantic, I really got to hand it to you / No man has ever loved me like you do."

Taylor opened up about the song's lyrics in the album's film The Official Release Party of a Showgirl, saying: '[It's] a love letter to someone who hates you ...

"There can be this moment where it's unveiled to you, through things that they do that are very overt. And, as I've gotten older, I've just started to be like, 'Oh my God, you did so much with this. It's flattering.

"That is, wow, that is very, very sweet of you to think about me this much, even if it's negative. In my industry, attention is affection, and you've given me a whole lot of it."

On Sympathy is a Knife, Charli said: "Don't know if I'm spiralling/ One voice tells me that they laugh/ George says I'm just paranoid.

"Don't wanna see her backstage at my boyfriend's show/ Fingers crossed behind my back/ I hope they break up real quick."

Taylor gave further clues about Actually Romantic's subject in an audio track-by-track breakdown of the new album for Amazon Music, in which she said: "[It's] a song about realising that someone else has kind of had a one-sided, adversarial relationship with you that you didn't know about.

"And all of a sudden they start doing too much and they start letting you know that actually, you've been living in their head rent-free and you had no idea."