A few years ago there was an unexplained “beauty” phenomenon called the “Thigh Gap”. In 1930 there was the “Thigh Bridge”
“A bridge of thighs. So said the fellow who sent us this clever bit of photography and we are not inclined to dispute him. The ladies present (fractionally, at least) are members of the chorus of MGM’s “Manhattan Serenade,” while he seen in the distance is Sammy Lee, dancing specialist and director of that picture.” – Exhibitors-Herald-World, Feb 8, 1930