It’s so nice of the Kensington Palace Twitter to give us so many illustrated informative captions today!

Kate looks VERY ready for spring in this green (it’s custom Jenny Packham) and actually very cheery in general. Maybe she’s finally got Charlotte convinced that it would be unethical to use her new brother or sister in any and all scientific experiments she may be planning because, unlike like George, Baby Cambridge Three will be too young to give consent.

[Photos: Tim Rooke/REX/Shutterstock, Geoff Pugh/REX/Shutterstock]