Jennifer Lopez vs Liz Taylor (1975)
No man can deny the smoldering sex appeal of Lopez, 38, and Taylor, 75, in their primes. Taylor has been hitched eight times (twice to Richard Burton), while Lopez is only on hubby number three.

Reese Witherspoon vs Grace Kelly (1964)
Both won Oscars as wives of substance-abusing singers: Witherspoon, 31, as Johnny Cash’s flame in the 2005 biopic Walk the Line; Kelly as the spouse of a fictional singer (Bing Crosby) in 1954’s The Country Girl.

Michelle Williams vs Mia Farrow (1968)
The soft-spoken, gamine actresses sported similar short dos: Stylist Laini Reeves chopped Williams’, 27, locks in February, while Vidal Sassoon gave Farrow a $5,000 cut for her role in 1968’s Rosemary’s Baby.

Natalie Portman vs Audrey Hepburn (1961)
Not only has Portman, 26, donned the dress Hepburn wore in 1961’s Breakfast at Tiffany’s, but both are humanitarians: Portman battles global poverty (FINCA), while Hepburn fought for children’s rights.

Scarlett Johansson vs Marilyn Monroe (Mid 1950s)
“Maybe it’s my platinum hair, or maybe it’s my body type,” Johansson, 22, has said of being compared to Monroe. “I never really understood it and don’t see it, but I absolutely love her.”

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