Britain's royal family is standing behind Prince Harry after nude photos of him at a Las Vegas party last week were published around the world. "He didn't do anything unlawful," a palace source told People.com about the 27-year-old prince, who is third in line for the British throne behind his father, Charles, and brother, William. "What he did was entirely his own business." Harry, who is Queen Elizabeth II's grandson, has been keeping a low profile since the photos were published, but he is to resume his official duties in London by attending the Paralympics Friday and WellChild Awards ceremony Monday, People.com said.