My Lucky Star (1938)

"A modern girl having a modern good time - swank clothes, swell dates, sweet romance - that's Sonja now, so dainty, so desirable, so incredible!"

George Cabot Jr., the son of a department store owner, enrolls Kristina Nielsen, the store's sports clerk, at a university to use her as an advertisement for their fashion department. She falls for Larry Taylor, a teacher, and gets expelled.