Sitting still when you’re 4 can definitely be tricky!

Her own littlest one is nearly aged out of the center’s focus.

They grow up so fast!

Kate Middleton smiling

Prince William has joked about his wife potentially wanting another baby in the past.

William always worries about me meeting under one-year-olds.

I come home saying, ‘Let’s have another one,'" viaPeople.

Prince Louis and Kate Middleton