Scarlett Johansson Boob-a-lution

June 30, 2003
At the premiere of "Legally Blonde 2 Red, White & Blonde," one particular blonde actress was starting to catch the eyes of everyone from envious female fans to ogling male ones. But while Scarlett's beauty landed her many prime film roles, her ever-present breasts became her calling card. See how Scarlett put the goods on display over the years.

Cleavage-o-meter: 1

Kevin Mazur, WireImage

January 11, 2004
Scarlett Johansson wore a DeBeers Wild Flowers Collection diamond necklace to the 15th Annual Palm Springs International Film Festival. But really, all we notice is the fact that the actress forgot to wear a bra. Sorry, DeBeers!

Cleavage-o-meter: 4

Barry King, WireImage

January 25, 2004
At the 61st Annual Golden Globe Awards after party, Scarlett wore a flesh-toned corset that left little to the imagination.

Cleavage-o-meter: 6

Kevin Mazur, WireImage

April 26, 2004
Scarlett went for mellow yellow at the 2004 Costume Institute Gala. Luckily, her cleavage was up for the challenge of celebrating the "Dangerous Liaisons" theme of the evening. Warning: Do not try this at home, unless you plan to have a seamstress sew a balconette bra into your dress like Scarlett's stylist seemingly did here. When it comes to supporting A-list cleavage, it takes a village.

Cleavage-o-meter: 10

Dimitrios Kambouris, WireImage

June 15, 2005
While posing at an event at the Hollywood Roosevelt Hotel, Scarlett was suspiciously missing her most infamous fashion accessories.

Cleavage-o-meter: 1

Gregg DeGuire, WireImage

August 7, 2005
At the premiere of "The Island" in London, ScarJo went strapless, which flattened out her lady parts a bit.

Cleavage-o-meter: 7

Ferdaus Shamim, WireImage

June 8, 2006
At a private party for Cartier, Scarlett wore a draped nude dress that kept her sufficiently covered up, while still displaying a little skin. We like this classy approach to cleavage.

Cleavage-o-meter: 7

Kevin Mazur, WireImage for Cartier

November 5, 2006
At the premiere of "The Prestige" in London, Scarlet experimented with an unusual neckline. While most women dread "side boob" spillage, Scarlett seems to welcome exposure at all angles.

Cleavage-o-meter: 8

Alan Weller, FilmMagic

February 11, 2007
Scarlett wore a cap-sleeve dress to the 49th Annual Grammy Awards in Los Angeles, but the front dipped so low that we feared the evening might include a nipple slip. Luckily for Scarlett, everything stayed in place.

Cleavage-o-meter: 9

Hector Mata, AFP / Getty Images

May 5, 2008
At the Costume Institute Gala in New York City, Scarlett approached the year's theme of "Superheroes: Fashion And Fantasy" with a bustier-topped strapless gown. Apparently, her designer dress is the fashion, and her cleavage is the fantasy.

Cleavage-o-meter: 8

Ray Tamarra, Getty Images