The image used in the research papers is a tight crop around the face, and sorry to disappoint I dont find anything suggestive there. Pretty yes, suggestive no.

The image used in the research papers is a tight crop around the face, and sorry to disappoint I dont find anything suggestive there. Pretty yes, suggestive no. Answers to questions like that depend a lot on the ambient culture. Some conservative cultures might find it provocative, sometimes an just and unveiled face is considered so.