EXCLUSIVE:   Anonymous Content has signed King Princess , the contemporary pop artist born Mikaela Mullaney Straus, with an eye toward helping her scale her work across film, television, and stage. A Brooklyn-based vocalist, songwriter, producer, and actor, King Princess made her on-screen debut in Season 2 of Hulu’s Nine Perfect Strangers , appearing alongside Nicole Kidman, Annie Murphy, Christine Baranski, Murray Bartlett, and Mark Strong. She made her feature debut last year in  Song Sung Blue , opposite Hugh Jackman and Kate Hudson, and will next be seen in Will Gluck’s rom-com  One Night Only , out August 7th. On May 13th, King Princess will make her stage debut in the musical adaptation of  Girl, Interrupted  at The Public Theater, directed by Jo Bonney with original music by Aimee Mann.…