After the service, conducted by the rector of Sandringham Jonathan Riviere, the Prince of Wales and Duchess of Cornwall chatted to Park House residents while the Queen was presented with gifts from children.
The Queen was wearing a burnt orange cashmere Stewart Parvin coat, fur hat and a diamond brooch.
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The youngster was targeted in a shop in Worcester.
Forecasters say highs of 34C could be reached on Wednesday.
Feeling very warm in the sunshine