It was a big moment for the Princess of Wales.
This was billed as a landmark speech and the most important she's ever delivered.
If the early years is her life's work, the speech certainly felt like her manifesto.
And we saw for the first time, the princess flexing her global convening power - bringing together international leaders and experts to talk and think about the early years.
We're told Kate wants to use her role to bring impactful change, and her speech set out why and how she hopes to do this.
It was certainly what the auditorium wanted to hear.
Through her Centre for Early Childhood, she's carried out international research into the key social and emotional skills children need to succeed in adulthood.
As Princess of Wales, she holds a unique position - and it is a position she has a global ambition for.
