Woody Allen: Good Genes or Good Docs?

Woody Allen's good looks are "Sweet and Lowdown."

Here's a 42-year-old version of the "Annie Hall" mastermind at a Studio 54 party back in 1977 (left) and 37 years later... the "Midnight in Paris" writer -- who celebrated his 79th birthday last week -- at a film event in Florida last month (right).