The royal wedding is almost upon us and as it draws closer more attention is being paid to one of Kate Middleton's most stunning qualities — her hair.

Known for her glowing locks, which she almost always wears down, Kate has only given one request for her hair on the big day, the UK's Daily Mail has reported.

"The one rule is by the time she gets to the end of the altar her husband must recognise her," Kate's hairstylist Richard Ward said.

Richard, who has been Kate's hairdresser for the past eight years, is also responsible Kate's mum Carole Middleton and sister Pippa Middleton's hair.

He says the trio has been in to the salon for a number of dress rehearsals in preparation for the big day.

Apart from saying Kate will opt for a "natural" look, Richard did not disclose any other information about the wedding dress or the big day.

He and his stylist James Pryce will join Kate's team of dressers who will assist her in getting ready at the Goring Hotel in Belgravia, close to Buckingham Palace, on the morning of the wedding.

Having known Kate for eight years, Richard says the reality of becoming a royal hasn't changed her.

"She's absolutely gorgeous and she's a lot of fun," he said. "She jokes around like everyone else, she feels very comfortable coming into the salon.

"She hasn't changed, she's just become more assured. She's caring, honest and good, and I haven't seen anything that will change that."