As if the cast of Denis Villeneuve’s “Dune: Part Two” couldn’t get any more star-studded, Anya Taylor-Joy has joined the ensemble.

In the days leading up to the film’s world premiere in London on Thursday, rumors began recirculating online that Taylor-Joy would play a role in the film led by Timothée Chalamet and Zendaya. Overnight, there was a flurry of activity on film twitter when fans noticed that Letterboxd featured “Dune: Part Two” among the list of films starring Taylor-Joy. The credit has since been removed, but screenshots continued to circulate.

Variety can confirm that it’s true: Taylor-Joy makes an appearance in “Dune,” playing a major character from the franchise that we won’t spoil here. And to top it all off, the Emmy-nominated and SAG- and Golden Globe-winning actor made a shock appearance at the London premiere, posing on the sand duned red carpet with her fashion-forward cast mates.

Taylor-Joy’s surprise casting adds to the film’s stacked roster of stars, as Austin Butler, Florence Pugh, Léa Seydoux, Souheila Yacoub and Christopher Walken join the franchise. Returning from the first installment are Rebecca Ferguson, Josh Brolin, Dave Bautista, Stellan Skarsgård, Charlotte Rampling and Javier Bardem.