The Hunk (1968)

Alexis, a charming little man, has taken on the task of looking after his nephews Kostas and Tolis, who have their eyes set on two beautiful neighbors, Anna and Kaiti, the nieces of a strict captain. When Kostas' aunt, Loukia Lolochampero, telegraphs from Africa that she is coming to Greece, they decide to throw a party and invite the two cousins so they can meet in person. The aunt postpones her trip, but the party must go on. They convince Alexis to dress up as a woman and pretend to be their aunt.