Jeaneology: All about denim
1936: Levi's introduces the iconic red tab on left rear pocket.

1940s: American servicemen expose Europeans to jeans.

1950s: Jeans stand for rebellion on Marlon Brando in "The Wild One" (1953), James Dean in "Rebel Without a Cause" (1955) and Elvis Presley in his 1957 "Jailhouse Rock" performance.

1956 Brigitte Bardot in "And God Created Woman" taps into denim's sex appeal.

1967: Hippies embellish their denim in the Summer of Love in San Francisco. Paul Newman as "Cool Hand Luke" reinforces denim's jailhouse swagger.

1971: Jeans become the dress-down uniform of the decade, from Cher to Jackie Onassis to Jane Birkin.

1973: Volkswagen produces the Jeans Beetle with all-denim trim.

1979: Short-shorts are immortalized as "Daisy Dukes" in "The Dukes of Hazzard."

1980: Nothing comes between 15-year-old Brooke Shields and her Calvin Klein jeans, in the first wave of designer denim.

1985: Hair bands rock acid-washed jeans; misguided youths do same.

1987: Baby-wannabes lop off their jeans and roll them above the knees a la Jennifer Grey in "Dirty Dancing."

Mid- to late '90s: Designers such as Jean Paul Gaultier and Vivienne Westwood elevate denim to high fashion.

Mid-'90s: Rap artists drop their drawers. This droopy-crotch look, called "sagging," is later banned in schools and some cities.

2000: The premium denim revolution dawns, with Seven for All Mankind earning $13 million in its first year and establishing Los Angeles as the premium jeans capital.

2008: Katie Holmes starts the "boyfriend" fashion craze with baggy, pegged jeans.

2009: "Jeggings" enters the vernacular thanks to stretch-denim pants..

2012: Skinny jeans maintain a stranglehold on women's fashion, but are reinterpreted in pastels and florals as the next evolution of the colored-denim trend.