I agree, Princess Caroline's looks are a blend between her mother Grace and her paternal grandmother Charlotte
As Prince Albert grows older, he looks more and more like Prince Rainier's father, almost the very image of his grandfather, Prince Pierre.
Princess Stephanie has many facial characteristics of her father. I have seen photos of Lizanne, Grace's sister and there seems to be a strong family resemblance between Lizanne and Stephanie, when they were young.
Has anyone ever seen a photo of Princess Charlotte's mother, Marie Juliette Louvet? Marie Juliette and Prince Louis II were the parents of Princess Charlotte. Marie Juliette married photographer Achille Delmaet. Delmaet was a well known photographer.
Princess Charlotte did not look like Prince Louis II, she might have looked like her mother, Marie Juliette. Undoubtedly, the photographer Delmaet took photographs of his wife, Marie Juliette.
OK, I found what I was looking for:
A magazine article with a picture of
Marie Juliette
She is the mother of Princess Charlotte, great-grandmother to Princess Caroline.
Princess Charlotte as a young girl