The Queen will not go to the registry office wedding of her son Prince Charles when he marries Camilla Parker Bowles in just over six weeks' time.
Buckingham Palace say it's because she's worried that she'll bring too much attention to the ceremony, as the couple want a quiet service.
But the Queen will go to the church blessing afterwards, and host the wedding reception, the palace added.
Prince William and Prince Harry are planning to attend the civil ceremony.
They'll be joined by Mrs Parker Bowles' children, Tom and Laura.
A palace spokeswoman said: "The Queen and the rest of the Royal Family will, of course, be going to the service of dedication at St George's Chapel, Windsor Castle."
"She is very pleased to be giving the wedding reception at the Castle."
Some school kids from Windsor thought it would be better if the Queen attended.
Daniel, 12, said: "I disagree with the wedding, but she should still go because she's his mum."
Alice, 13, added: "She should offer her support to her son."
It is thought that the Queen, who is the head of the Church of England, has never been to a registry office wedding.
The marriage ceremony was originally planned to be held at Windsor Castle, but the venue was changed after problems with the marriage license.