It was a “Brat” Berlinale on Saturday as music superstar Charli xcx landed in the German capital to talk about her mockumentary The Moment with director Aidan Zamiri. The pair came together for the film’s press conference ahead of its international premiere Saturday night, the room overflowing with journalists keen to get a glimpse of the Grammy-winning Brit. The Moment, which had its world premiere at Sundance last month, follows the highs and lows of a popstar’s rise to global fame. Alexander Skarsgård, Rosanna Arquette, Hailey Benton Gates, Jamie Demetriou, Rachel Sennott, Kate Berlant, Rish Shah and Kylie Jenner all star. Charli kicked off the presser by discussing how emotional and difficult the “Brat” era was for her. “When you release art into the world, and it reaches a wide audience, and in my case, this was the widest audience I ever reached,” she said about the wildly popular album, “the work begins to sort of morph and change in its meaning. And obviously that’s just what comes with releasing art, period. But I’d never …