Mamma Mia! sold more than 2.25 million units worth more than $30 million in its first day of domestic DVD and Blu-ray sales on December 16, Universal Studios Home Entertainment announced. Already the highest-grossing theatrical musical release, with more than $572 million worldwide, the Golden Globe-nominated movie version of the stage production based on the music of 1970s pop group ABBA, became the fastest selling DVD of all time in the U.K. in November, after first-day sales reached 1.6 million units, surpassing the previous decade-long record holder "Titanic" by more than a half-million units.