'My beautiful mother': Prince of Monaco's touching tribute

With his wife, Charlene, Princess of Monaco on his arm Prince Albert Ii of Monaco walk through gown area of the Grace Kelly exhibit at the James Mitchner Museum in Doylestown. (AP)

Prince Albert II of Monaco, center, walks through the Grace Kelly exhibit at the James Mitchner Museum with his wife Charlene, Princess of Monaco, on the right. (AP)

Prince Albert II of Monaco, center, walks through the Grace Kelly exhibit at the james Mitchner Museum in Doylestown, Pa. A large photograph of his mother in her wedding dress is on the left. (AP)

With a large photograph of his mother, when she was an actress in Hollywood, looking on Prince Albert II of Monaco, right, and his wife, Charlene, Princess of Monaco walk through the Grace Kelly exhibit at the James Mitchner Library in Doylestown. (AP)

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