The world premiere of the Alysa Nahmias-directed documentary Cookie Queens got a royal boost Saturday night in Salt Lake City from a surprise appearance by Prince Harry and Meghan Markle, the Duchess of Sussex.

The couple attended a celebratory Sundance Film Festival screening inside Salt Lake’s Rose Wagner Performing Arts Center where they posed with Amy Redford, daughter of the late icon and Sundance founder Robert Redford, festival director Eugene Hernandez and Cookie Queens filmmaker Nahmias.

The showing from the couple was not made public before the premiere but it perhaps wasn’t a shock to insiders as they are among the doc’s team of executive producers alongside a long roster that also includes Tegan Acton, Hallee Adelman, Trevor Burgess, James Costa, Geralyn Dreyfous, Stephen G. Hall, Ruth Ann Harnisch, Melony Lewis, Adam Lewis, Ann Lewnes, Ann Lovell, Emma Pompetti, Chanel Pysnik and Regina K. Scully. Nahmias…