Queen Elizabeth II, 95, attended the baptism of her last two great-grandsons on Sunday, a week after having to cancel her attendance at an official ceremony, according to a source at Buckingham Palace.
She was seen in a pale green jacket and hat aboard a Range Rover at the end of the day in images published by the British press.
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August Brooksbank and Lucas Tindall were baptized in a private ceremony at the All Saints Chapel, in the Royal Estate of Windsor, about 50 miles west of London.
The first is the son of Eugenie, daughter of Prince Andrew, second son of the Queen and her late husband Prince Philip.
The second is the son of Zara Tindall, daughter of Princess Anne, daughter of Elizabeth II.
The two baptized children, born at the beginning of the year, are respectively 13th and 24th in the order of succession to the throne.
The state of health of the sovereign, who has reigned for nearly 70 years, worries since she was put to rest by her doctors on October 20 and spent a night in the hospital for "preliminary" examinations including the nature has never been specified.
Earlier in the week, the Queen gave her first publicized face-to-face interview in a month, receiving Britain's Chief of Staff Nick Carter at Windsor Castle on Wednesday.
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She had until then had to cancel several public appearances, but had nevertheless held hearings by videoconference.
The queen was due to make her public return last Sunday watching a ceremony honoring the victims of war from a balcony, but her participation was canceled at the last minute, the palace explaining that she was suffering from back pain.
Elizabeth II had also canceled at the end of October her trip to Glasgow (Scotland) for the United Nations climate conference (COP26) where Princes Charles, the heir to the throne, and William, her eldest son, represented the royal family.