Movie musical MAMMA MIA! has become the fastest-selling DVD in the U.K. in history - after shifting more than 1.5 million copies on its first day of release. The film, which stars Meryl Streep and Pierce Brosnan, sold 1,669,084 copies on Monday (24Nov08), 560,000 more than previous record-holder Titanic, which was released in 1997.