Mick Jagger's girlfriend, model Jerry Hall, gave birth to the couple's second child yesterday, a 7-pound blond boy. The Rolling Stones singer was present, a spokesman said . . .

Prince Charles and Princess Diana visited nine survivors of last week's British Airtours Boeing 737 fire at hospitals in Manchester, England, Tuesday. The royal couple helped cheer up Lindsey Elliott, 13, whose mother, aunt and uncle died in the blaze. Elliott "was absolutely thrilled" when the couple visited her room in Wythenshawe Hospital, said nurse Janet Edwards . . .

Former tennis star Bjorn Borg will become a traveling tourism ambassador for his native Sweden, the Sweden Tourist Board announced yesterday. Borg, 29, who moved to Monaco to avoid high Swedish taxes, said he would start the new job when he moves back to Sweden at the beginning of next year. "I have always represented Sweden abroad and I have a lot of contacts," he said . . .

John Lennon's white Mercedes limousine has been withdrawn from an auction of rock memorabilia because former Supremes singer Mary Wilson claims it belongs to her, London's Daily Express newspaper reported yesterday. Susu Robinson, a spokeswoman for Sotheby's auction house in London, said the custom-built stretch limousine was to have been auctioned today and was expected to bring in $210,000. "The problem is a question of ownership," she said, but declined to say who was offering it for sale or any details of the dispute . . .

This year's Franklin D. Roosevelt Four Freedoms medals will go to Elie Wiesel, chairman of the National Holocaust Memorial Commission, for his "courage and eloquence . . . for threatened peoples everywhere"; economist John Kenneth Galbraith for his writings on the problems of developing nations; social scientist Kenneth B. Clark for his role in battling segregation; Rep. Claude Pepper (D-Fla.) for his work on Social Security; and nuclear scientist Isidor Rabi for his "moral leadership" in the nuclear age. The recipients, announced Tuesday, will receive the award Sept. 27 at Bard College in New York.