This is a tale from Archeology, but I think it says a lot about sexism. In the 1920's, a tomb was discovered in Egypt that contained two mummies of women, one regal and beautiful, the other old and obese. The beautiful mummy was removed and taken to the museum in Cairo; the other was buried in sand and left. In the 1990's, speculation was made that one of these woman might be the missing pharaoh Hatshepsut, a powerful ruler who like Elizabeth I brought peace and prosperity to Egypt. In 2006, the head of Egypt's archeology dept ordered the two bodies found and examined. He declared the fat woman, the nurse and the beautiful woman a possible match for Hatshepsut.
He was wrong! As of June 27, 2007, a tooth positively identified as Hatshepsut's matches the overweight woman. So, here's to all the overweight women who can't possibly rule the world because they don't look the part. Smile!