ABBA Reunite At New 'Mamma Mia' Inspired Restaurant

For the first time in eight years, ABBA reunited Wednesday at the launch of Björn Ulvaeus' new restaurant.

Ulvaeus, 70, was joined by Benny Andersson, 69, Agnetha Fältskog, 65, and Anni-Frid Lyngstad, 70, to celebrate the opening of his new eatery, "Mama Mia! The party" in Stockholm.