What campaign did Billie Eilish participate in with Calvin Klein?

Billie Eilish participated in Calvin Klein's 'I Speak My Truth' #MyCalvins campaign in May 2019, where she shared her personal truth about wearing baggy clothes to maintain privacy and prevent public opinion on her body. Eilish stated, 'I never want the world to know everything about me... that's why I wear big baggy clothes. Nobody can have an opinion because they haven't seen what's underneath.'