Brooke Shields is a square jawed woman
Near perfect profile of Brooke Shields. Look at the perfect vertical alignment of lips, chin, and nasal base. That's a B grade chin. Jaw angle is B, and jawline flat.
She is of the square jawed type, but not excessive. That's the balance of the B grade.
From what I read Natalia Castellar is around 22 years old. The above B&W pic is at least 15 years old. So it can't be her.
Also, the ear lob looks different.
But there is indeed a resemblance.