Pixie Lott is engaged

Pixie Lott is engaged.

The 25-year-old singer took to Instagram on Sunday (11.13.16) to share a series of pictures in which she revealed that her long term boyfriend Oliver Cheshire, 28, finally popped the question after six years together.

On a picture of her sparkly diamond ring, the ‘Mama Do’ hitmaker wrote: "so happy biggest surprise ever (sic)"

Another picture of the pair cuddled together with glasses of champagne was captioned: "I cried my [eyes] out (sic)"

The male model – who surprised his girlfriend with the romantic act outside St Paul’s Cathedral in London – also took to his photo sharing account to reveal the news, describing the ‘Cry Me Out’ singer as "the most beautiful woman in the world."

He wrote: "What a beautiful day and the most beautiful woman in the world said yes to me. Lucky man (sic)"

Another picture taken from the Twitter account of a passerby who saw the event included the text: "Just witnessed Pixie Lott and her boyfriend jump out of a taxi and then he got down on bended knee and proposed to her right in front of us. He asked me for a tissue. I handed her a tissue!!!! x (sic)"

Oliver captioned the photo: "Caught in the act. She only bloody said yes (sic)"

An onlooker described the event as "so romantic", and said the blonde beauty "couldn’t stop crying".

They told The Sun newspaper: "It was so romantic – Pixie didn’t seem to have any idea he was going to ask her to marry him and started sobbing with tears of happiness.

"When she couldn’t stop crying Ollie asked a passer-by for a tissue as he said he didn’t want to give her his snotty hankie.

"They then hid behind a pillar for some privacy, but they didn’t seem to have a care in the world about who saw their special moment – it was like something from a movie."

Meanwhile, a representative for Pixie told MailOnline: "She’s so excited and celebrating with her family – and it was the most wonderful surprise at St Paul’s Cathedral this afternoon."