What Beautiful Hair (Bob's, Of Course)

My, what a gorgeous, sexy couple!  Have to admit it threw me when I first saw the photo, could not place it at all.  I was quite sure I knew all of Bob's leading ladies, but here he was in the arms of another woman!  How could this happen?!

Turns out it is a promotional shot for Untamed (1929) and Bob is shown with Gwen Lee, who played one of Joan Crawford's competitors for Bob's affection.  I think Joan had real cause for concern ...