Prince Harry got his nephew Prince Louis the sweetest christening gift

And it's a lovely tribute to his late mother, Princess Diana

Prince Louis' christening took place in London yesterday, the first time we'd seen the three-month-old since his arrival in April.

Ahead of the service at 4pm, the palace announced his six godparents, before guests flocked to the Chapel Royal at St James' Palace, later moving on to tea and cake at Clarence House.

In honour of the occasion, Prince Harry sought out a very thoughtful gift for his newborn nephew.

The proud uncle gifted Louis a first edition of Winnie the Pooh by A.A. Milne, costing £8,000 – and apparently it's a tribute to his late mother, Princess Diana.

'One of Harry's happiest childhood memories was being read a bedtime story by his mother,' a source told The Sun.

'She loved all the old classics and Harry had the brilliant idea of starting a little library of first editions for Louis, Charlotte and George to enjoy as they get older.'

Adorable!

'He originally wanted to get Louis Carroll's Through The Looking Glass, which was on sale for £24,000, but decided Winnie The Pooh would be more suitable for a first tome.

'Robinson Crusoe was William's favourite book, but Harry loved all things A.A. Milne.'

The idea of starting a library for his niece and nephews is such a lovely one, and just shows the kind of thoughtful guy Prince Harry is.

So sweet!