Meryl Streep has been forced to scrap plans to attend the Screen Actors Guild Awards on Sunday (28JAN07) because she has a date with Prince Charles and former US Vice-President Al Gore. The actress is nominated for a SAG Award for portraying mean fashion boss MIRANDA PRIESTLY in The Devil Wears Prada, but she won't be attending the glitzy Los Angeles prize-giving. In a statement, Streep's publicist explains, "Meryl Streep will not be able to attend the Screen Actors Guild Award ceremonies... She will be co-hosting the 10th annual benefit for Harvard Medical School's Center for Health and the Global Environment. "Vice President AL GORE and she will present the Center's Global Citizen award to HRH THE PRINCE OF WALES for his outstanding commitment to sound environmental stewardship. "The event was planned a year ago, and Ms Streep felt she was unable to renege on her commitment, in spite of the honour of a nomination."