Most people believe that looks skip a generation. Yes, they perceive a person's level of attractiveness to be a direct result of their lineage, not of their parents, but their grandparents.
This idea has not been scientifically proven and in no way has any grounding in reality. There is nothing that states a person's features have any more to do with their extended family than their parents. Genes are passed through generations--each generation. They don't merely skip around arbitrarily.