Acting · b. 1935 · Los Angeles, California, USA Steffi Sidney Acting Rediscovering a Rebel Self - 'Mil' (archive footage) (as Steffi Sydney) 1996 James Dean: A Portrait Self 1995 Forever James Dean Herself 1988 The Hot Angel Myrna 1958 Teacher's Pet Book Store Girl (uncredited) 1958 Rebel Without a Cause Mil 1955 Hold Back Tomorrow Clara 1955 Agent-readable