Chappell Roan can't be stopped.

Over the last 12 months, the 26-year-old has become the buzziest star in pop. A flamboyant, flame-haired sensation, whose songs are as colourful as they are raw.

Her debut album, released to little fanfare in 2023, has just topped the UK charts for a second time. Next week, she's up for six Grammy awards, including best new artist. And BBC Radio 1 have named her their Sound Of 2025.

Success has been all the sweeter because her former record label refused to release many of the songs that exploded onto the charts last year.

"They were like, 'This is not gonna work. We don't get it'," Roan tells Radio 1's Jack Saunders.

Reaching pop's A-list isn't just a vindication but a revolution.

The 26-year-old is the first female pop star to achieve mainstream success as an openly queer person, rather than coming out as part of their post-fame narrative.

On a more personal level, she's finally done well enough to move into a house of her own, and acquire a rescue cat, named Cherub Lou.

"She's super tiny, her breath smells so bad, and she doesn't have a meow," the singer dotes.

If kitten ownership is a benefit of fame, Roan has bristled at the downsides.

She has spoken out against abusive fans, calling out "creepy behaviour" from people who harass her in airport queues and "stalk" her parents' home. Last September, she went viral for cussing a photographer who'd been shouting abuse at stars on the red carpet of the MTV Awards.

"I was looking around, and I was like, 'This is what people are OK with all the time? And I'm supposed to act normal? This is not normal. This is crazy'," she recalls.

The incident made headlines. British tabloids called her outburst the "tantrum" of a "spoiled diva".

But Roan is unapologetic.

"I've been responding that way to disrespect my whole life - but now there are cameras on me, and I also happen to be a pop star, and those things don't match. It's like oil and water."

Roan says musicians are trained to be obedient. Standing up for yourself is portrayed as whining or ingratitude, and rejecting convention comes at a cost.

"I think, actually, I'd be more successful if I was OK wearing a muzzle," she laughs.

"If I were to override more of my basic instincts, where my heart is going, 'Stop, stop, stop, you're not OK', I would be bigger.

"I would be way bigger... And I would still be on tour right now."

Indeed, Roan rejected the pressure of extending her 2024 tour to protect her physical and mental health. She credits that resolve to her late grandfather.

"There's something he said that I think about in every move I make with my career. There are always options."

"So when someone says, 'Do this concert because you'll never get offered that much money ever again', it's like, who cares?

"If I don't feel like doing this right now, there are always options. There is not a scarcity of opportunity. I think about that all the time."As fans will know by now, Roan was born Kayleigh Rose Amstutz and raised in the Bible Belt town of Willard, Missouri.

The oldest of four children, she aspired to be an actress – but, for a long time, it seemed her future would be in sport. She ran at state-competition level, and almost went to college for cross-country.

Then she entered a singing contest at the age of 13 and won. Before long, she'd written her first song, about a crush on a Mormon boy who wasn't allowed to date outside his faith.

She took her stage name as a tribute to her grandfather Dennis K Chappell and his favourite song, a Western ballad called The Strawberry Roan.

"He was very funny and very smart," she recalls. "And I don't think he ever questioned my ability.

"A lot of people were like, 'You should go completely country', or, 'You should try Christian music'. And he never told me to do anything.

"He was the only person that was like, 'You don't need a plan B. Just do it'."