What is the main conflict in The Philadelphia Story by Philip Barry?

Tracy Lord, the wealthy heroine of The Philadelphia Story, divorces her husband, C.K. Dexter Haven, and is about to marry a man named George Kittredge. However, their wedding preparations are interrupted by meddlesome reporters, her ex-husband, and her estranged father; she is also disconcerted by the growing realization that she still has feelings for her ex-husband, Dexter. Amidst the situation comedy and fast-paced dialogue, Barry explores several contemporary social issues, such as society's perception of class differences in America and contemporary attitudes towards adultery and divorce.