All four former members of the 1970s Swedish pop group Abba have reunited for the opening of a new business venture in the capital Stockholm.
The dining-entertainment venue, based on the Greek taverna featured in the Abba-themed film Mamma Mia! Is the idea of Abba star Bjorn Ulvaeus.
The four Abba stars were last seen in public together for the film premieres of Mamma Mia! In London and Stockholm in 2008.