Taylor Swift is celebrating her 26th birthday with a concert film

Los Angeles - Taylor Swift celebrated her 26th birthday with the announcement of her concert film.

The singer turned 26 on Sunday and took to Twitter to reveal the forthcoming release of the 1989 World Tour LIVE concert film on Apple Music.

She tweeted: "Thank you so much for all the birthday wishes. I have a little surprise for you.#1989WorldTourLIVE @applemusic (sic)."

And Taylor also included a clip of the film in which she explained her dreams for the tour.

She said: "Getting ready for this, I wondered about a lot of things. I wondered what it would be like to perform for 70 000 people. I wondered what it would look like if they were all lit up and just dancing around like no one was watching them."

Referring to her many celebrity guests on the tour, she said: "I wondered what would happen if I invited the most amazing artists in the world to come out with me and perform with me on my stage. Would they do it?"

The film has been directed by Jonas Akerlund and will be released on 20 December.

Meanwhile the 26-year-old celebrated her birthday with a throwback.