Yes as we age our chins and jaws and our face get bigger.
But eventually after a certain age our chins and face and jaws quit growing as much.
As we grow from birth to adult our chins, jaws and face change shape and grow and our heads get bigger and bigger to a certain point.
It all happens slowly overtime and it's usually most noticeable after a year or so of a child growing.
Just like the body continues to grow overtime and at night a child and baby is growing bigger and taller even though it's not really noticeable right away.
But you'll notice after a month or so of a newborn getting older they will have gained some weight and grown a bit more.
Then a year later they will be a bit taller and then by 18 months you'll notice they are even taller.
And then year after year the face will change and the height will change as well.
Kids will outgrow clothing really quick.