Queen Elizabeth II has become the first British sovereign to reach her 90th birthday and is celebrating in a very royal way: with a stamp. An official photo showing four generations of royals—the queen and princes Charles, William, and George—will be put on first-class stamps, reports CNN. The queen will take it easy on her birthday, lighting the first of some 900 celebratory beacons before President Obama visits on Friday, reports the New York Times. But she'll be one of 10,000 attendees at a birthday picnic in June (when her birthday is ceremonially marked), when pubs will be open for an extra two hours. Prince William shares kind words with Sky News, noting she's been a "strong female influence" who helped him through the death of his mother. He also recalls getting into trouble as a kid and being on the receiving end of "the most almighty bollocking." More birthday coverage: