Trying to identify 1920's actress

hi

This is a bit of a long shot. I'm trying to identify someone from a Hannah Hoch photomontage from between 1925 and 1930. I believe she is a film star based upon her other artworks from that period. The image is probably from a German Magazine (she lived in Berlin) and would have been known to a German audience. After flicking through 100s of film magazines from that time the closest I could come to was Kathryn McGuire but I feel this is not correct. Obvious I don't have a full image. Here is all I have....

Any ideas ?????

Thanking you in advance 

MyCall