Adele unrecognisable in 29th birthday costume

If you're worried about ageing, don't worry - pop superstar Adele is too.

The 29-year-old, who recently ended the wildly popular Australasian leg of her world tour, has posted a series of photos to Instagram a year out from her big 3-0, where she appears transformed into an old woman.

"Nearly 30!" the post reads. "Thanks for the well wishes. See you soon x."

The get-up - a pink cardigan, greying red hair and glasses - make the singer with the recognisable face almost unrecognisable.

It's likely a take on comedian Catherine Tate's character, Joannie "Nan" Taylor.

It isn't the first time the British songstress had been photographed in costume. For Halloween last year, she dressed Jim Carrey's character from The Mask.

The year before that, she posted photos of herself dressed as George Michael and used the hashtag gottahavefaith.

Adele won the hearts of Kiwi fans in March and broke records, selling more than 40,000 more tickets than any other artists visiting Auckland.

She set the record for the fastest-selling tour in New Zealand, the highest number of tickets sold in a single day and the most shows at Mt Smart for an artist performing on a consecutive tour.

Newshub.