Why must actresses act out an elaborate pageant of hurty-feelings? Back in the 20th century, there was a trend for beautiful female film stars to compare themselves to comical or unattractive animals. Michelle Pfeiffer insisted that she looked like a duck; Uma Thurman claimed to resemble a hammer-head shark. Not just actresses; there was a song by Pink, in which the then 23-year-old, size-six blonde babe with the snub nose and big eyes beat herself up for not being conventionally pretty like