The new oldest woman in the world, Misao Ohkawa celebrated her 115th birthday in the western Japanese city of Osaka on Tuesday at her retirement home.

Ohkawa was officially recognised by the Guinness World Records as the oldest woman alive last week on Wednesday.

Born to a clothing merchant in 1898, she is said to like shawls and was therefore given a brown and white polka dot clothe.

That gift came with a strawberry and whipped creamed topped cake and some flowers to celebrate this special day with local media.

The wheelchair-ridden Ohkawa was asked what the secret to longevity was.

"Sleep well, eat well. Ain't that it?" she said before digging in to a bowl of her favourite noodles and marinated mackerel sushi for lunch.

Retirement home staff said the cake would be eaten later in the day during tea-time.

Japanese media report that she's never had major illnesses in her life, and only travels in a wheelchair to prevent her from falling over.

Ohkawa married in 1919 and has three children, four grandchildren and six great-grandchildren.

Japan has more than 50,000 centenarians, according to government data released last year, reinforcing its reputation for longevity.

The world's oldest man is also Japanese - Jiroemon Kimura, who turns 116 in a month's time.

Presented by Adam Justice