Barbie film trailer and posters: Surprise cast members join Margot Robbie and Ryan Gosling

The new Barbie film already had a staggering cast including Margot Robbie and Ryan Gosling as Barbie and Ken, but a dazzling new avalanche of cast posters give a first look at major British Doctor Who, Bridgerton and pop stars, including a 'big secret' reveal of Dua Lipa.