Speaking at the relaunched Hintze Hall, the Duchess admitted her children Prince George and Princess Charlotte "adore" visiting the museum. However, we'll let him off the hook because they only went and replaced the Diplodocus plater-cast with a real blue whale skeleton and it is MASSIVE. "The transformation of Hintze Hall represents a new era for us as a natural history museum for the future".
The blue whale has been named Hope as a "symbol of humanity's power to shape a sustainable future".
"We wanted to create a highly visual experience that would work in-gallery and on mobile, so that visitors could dive deeper into the background of this fascinating specimen at their own pace", said Piers Jones, chief digital and product officer at the Museum.
The mammal, which has been nicknamed "Hope", originally went on display in 1934 but has been moved as part of a revamp at the south Kensington museum.
On Thursday, the museum presented an official unveiling of Hope along with the time-lapse video that shows the skeleton being pieced together from start to finish.More news: Trump says 'something could happen' on Paris climate accord
Before Middleton, who is a patron of the museum, perused the exhibits with Attenborough, she was overheard cracking a joke with the famed TV veteran.
The museum has been closed for refurbishment for six months and reopened its doors to the public on Friday (14 July). In 2014, a British-Australian billionaire businessman and philanthropist - Sir Michael Hintze (above) - donated £5 million to the Natural History Museum.
Dippy the Diplodocus is about to embark on a 24-month tour of the United Kingdom, visiting, Wales, Northern Ireland, Scotland, and five regions of England.