Prince Albert has unveiled the restoration of his iconic mother's childhood home - and there's an Irish flag proudly hanging above the entrance.

Irish American beauty Grace Kelly lived in the Pennsylvania city of Philadelphia before her movie career turned her into a global star and ultimately, a royal Princess.

Her son, Prince Albert, snapped up her childhood home in the Fall of 2016 for $755,000.

In the almost-century that had passed since the late Kelly lived there, the six-bedroom home needed a serious overhaul.

The two-and-a-half stories tall property, located in East Falls, has now been restored to the standards of the Monaco royals.

Prince Albert told the Today Show that the restoration project was an "emotional experience".

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'I remember rolling on this carpet with my sisters and my cousins, playing, as five or six year old,' he said as he recalled memories from visiting the house of his grandparents.

The 60-year-old royal added that he can't wait to make new memories at the home with his own children, twins Prince Jacques and Princess Gabriella.

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