TAYLOR Swift revealed she ‘disappeared’ for a year because she believed ‘that’s what people wanted’ in the first look at her new documentary Miss Americana.

The 30-year-old shared the first full-length trailer for her upcoming access-all-areas Netflix doc, which will premiere at Sundance Film Festival on January 23, on Instagram today.

Sharing the emotional trailer, the singer wrote: “Miss Americana – Official Trailer · It’s been a long time coming Out in select theaters and on @NetflixFilm January 31”.

In the two-minute trailer, Taylor admits she disappeared from public life between 2016 and 2017 following her public feud with Kim Kardashian and Kanye West because she grew tired of “fighting for people’s respect”.

She began: “Nobody physically saw me for a year and that’s what I thought they wanted.

“I had to deconstruct a complete belief system. It woke me up from constantly feeling that I was fighting for people’s respect.”

The popstar also discusses how she “became the person” everyone wanted her to be but is happy to finally have found her voice.

Taylor added: “I feel really good about not feeling muzzled anymore and it’s a really good feeling”.

The documentary, which is directed by Emmy winning Lana Wilson, also sees glimpses of Taylor with long-term boyfriend Joe Alwyn.

The trailer comes a day after the singer revealed her mother Andrea was diagnosed with a brain tumor as she battles breast cancer for a second time.

The Trouble hitmaker discussed her mother’s health publicly for the first time and explained that doctors made the devastating health discovery as her 62-year-old mother underwent chemotherapy.

Speaking to Variety about how her family have been coping, she revealed: “She was going through chemo, and that’s a hard enough thing for a person to go through. While she was going through treatment, they found a brain tumor.”

Keeping her mother’s health battle private until now, Taylor, who was promoting her upcoming documentary Miss Americana, explained how “hard” it has been for them as a family.

She added: “[Cancer] is a hard enough thing for a person to go through… The symptoms of what a person goes through when they have a brain tumor is nothing like what we’ve ever been through with her cancer before.

“So it’s just been a really hard time for us as a family.

Andrea was first diagnosed with cancer in 2015 and following treatment went into remission but it returned in March while Taylor filmed her Netflix documentary.

In the same interview, the Lover songstress revealed she condensed her usual yearlong tour into nine months so she could support Andrea through her diagnosis.

The global superstar recently touched on her mother’s health woes in her latest album Lover called You’ll Get Better Soon.

The heartbreaking ode to Andrea, which features The Dixie Chicks, sees Taylor sing lyrics such as: “And I hate to make this all about me. But who am I supposed to talk to? What am I supposed to do? If there is no you.”

As well as: “It’s been years of hoping and I keep saying it cause I have to – you’ll get better.”

In August, Taylor discussed how difficult it was to write the heartfelt track during a YouTube Live event and said it was a “family decision” whether to include it on her latest album.

“That was really, really hard to write, and it was also just a family decision whether to even put it on the album,” Taylor reflected.

“I think songs that are really hard for you to write emotionally, maybe they’re really hard to write and hard to sing because they’re really true.”Taylor’s Netflix doc Miss Americana will be released on the streaming service on January 31.