Mild sibling rivalry between identical twin sisters Sylvina and Martina intensifies after one of the girls tricks the other's sweetheart into proposing to the wrong twin.Mild sibling rivalry between identical twin sisters Sylvina and Martina intensifies after one of the girls tricks the other's sweetheart into proposing to the wrong twin.Mild sibling rivalry between identical twin sisters Sylvina and Martina intensifies after one of the girls tricks the other's sweetheart into proposing to the wrong twin.