Similar?

 I think all 3 kids have some similarities from a side profile...similiar cheeks and the same nose...S and L definitely have the same lips...

Summer

Colton

Larkyn

All 3 have big eyes...

Summer

Colton

Larkyn

 And are definitely related...

Summer

Colton

Larkyn

Yet, they are each uniquely their own person...

Colton

Larkyn