Why Mario Testino Shooting Princess Charlotte's Christening Is A Very Touching Tribute To Diana

Princess Charlotte is to be baptised on Sunday at St Mary Magdalen.

Princess Charlotte's christening just got even better, something we didn't think was possible.

Earlier in the week, we reported that Prince William and Kate Middleton were kindly inviting members of the public to gather outside the Norfolk church the service going to be held this Sunday - Prince George's do was a very private affair.

And now we've learnt that the momentous event is going to be caught on camera by world-renowned photographer Mario Testino.

Naturally, he's thrilled by the proposition.

'I am overwhelmed and honoured to be chosen to document this occasion,' said Mario. 'And to carry on the documentation of the family that is the soul of this country, a country that has given me so much.'

Kensington Palace confirmed that Wills and Kate are tremendously happy too, saying: 'The Duke and Duchess are delighted that Mario Testino will help capture this important moment for their family and look forward to sharing the photographs with the public.'

It's not the first time the royal duo, both 33, have worked with the star snapper who's shot everyone from model Kate Moss and actress Cameron Diaz to pop superstar Madonna.

He was drafted in to take Wills and Kate's official engagement portraits - which were later turned into stamps - back in 2010, having already snapped the Duchess' husband-to-be and Prince Harry's 21st birthdays.

But Mario's bond with the royal family goes much deeper than Prince George and Princess Charlotte's mum, dad and uncle - he was close friends with their late grandmother Princess Diana.

He photographed Diana's most famous magazine covershoot which saw her model 79 different sensational dresses. The frocks were later put up for auction.

Wills and Kate have made another touching tribute to his mother Diana too by arranging for their baby girl's baptism to take place at St Mary Magdalene.

Diana was christened at the same 16th century chapel on 30 August 1961.

For more on Diana, come with us as we investigate the truth behind her fashion moments or check out her iconic dresses.