Scarlett Johansson's Sweetest and Sexiest Moments!

Scarlett Johansson turned 30 on Saturday! It's the end of a major year for the star, who gave birth to her first child, daughter Rose Dorothy, with fiancé Romain Dauriac in August. Scarlett also spent plenty of time in the spotlight, starring in hit films like Captain America: The Winter Soldier and Lucy.

Scarlett has been a fixture in the film industry since the age of 10 with her 1994 debut in the movie North. She's among Hollywood's most beautiful stars and was even named Esquire's "Sexiest Woman Alive" in 2006. To honor Scarlett's big day, we're taking a look back at some of her sweetest and sexiest snaps from over the years. Keep reading to see her evolution!

Sources: FameFlynet, Getty, and WireImage

Getty | Alberto E. Rodriguez

Scarlett had that pregnancy glow at the LA premiere of Captain America: The Winter Soldier in March 2014.

Bauer-Griffin Online

Scarlett looked sexy in a skintight black catsuit while on the set of The Avengers in 2011.

FameFlynet

Scarlett and Ryan Reynolds shared a sexy smooch on a motorcycle in 2008.

FameFlynet

Scarlett broke out her bikini and hit the beach in Hawaii in February 2012.

WireImage

A fresh-faced, 12-year-old Scarlett posed at an event in 1996.

Bauer-Griffin Online

Scarlett palled around with some pups while on the set of The Island in 2004.

WireImage

Scarlett shared a steamy onstage kiss with Sandra Bullock at the MTV Movie Awards in 2010.

Bauer-Griffin Online

Scarlett's growing baby bump was on display in Paris in May 2014.

WireImage

Scarlett struck a silly pose while getting her nails done at an event in 2003.

WireImage

Scarlett shared a hug with her Lost in Translation director, Sofia Coppola, in 2003.

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Scarlett made a special appearance at the premiere of Her at the Rome Film Festival in November 2013.

WireImage

Scarlett posed for pictures with fans in 2003.

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Scarlett performed in a sexy dress during a Cynthia Rowley Spring 2004 runway show.

INFphoto.com

Scarlett embraced Romain outside of their NYC hotel in December 2012, less than a year before their engagement.

Getty | Ian Gavan

Scarlett linked up with costar Chris Evans at the UK premiere of Captain America: The Winter Soldier in London in March 2014.

Getty

Scarlett and her Vicky Cristina Barcelona costar Penelope Cruz shared a smile at the film's premiere in 2008.

WireImage

Scarlett wowed at the 2006 Golden Globes in this sexy red dress.

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Scarlett sported a backless dress to the 2003 Hollywood Awards.

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Scarlett spent time with Drew Barrymore at the premiere party for their film He's Just Not That Into You in 2009.

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Scarlett hugged a giant M&M's pillow at an event in 2003.

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Scarlett and Anne Hathaway posed together at a Golden Globes afterparty in 2004.

Getty | Dominique Charriau

Scarlett shared a smiley moment with Romain at the César Awards in Paris in February 2014.

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Scarlett performed with the Pussycat Dolls at The Viper Room in 2004.

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Scarlett smiled with Natalie Portman at the Berlin photocall for The Other Boelyn Girl in 2008.

FameFlynet

Scarlett's appearance at the Toronto International Film Festival in September 2013 marked her first public outing since she confirmed that she is engaged to Romain.

WireImage

Scarlett gave a sweet thumbs-up at the Independent Spirit Awards in 1997.

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Scarlett playfully hid behind a friend at a party in 2004.

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Scarlett wore a cute minidress and strappy black heels to the MTV Movie Awards in 2004.

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Scarlett gave John Travolta a big hug at the 2004 Venice Film Festival.

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Scarlett posed with Spongebob Squarepants at the premiere of The Spongebob Squarepants Movie in 2004.

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Scarlett smiled with her The Island costars Michael Clarke Duncan and Djimon Hounsou in 2005.

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In 2005, Scarlett and Topher Grace clowned around at a Premiere magazine party.

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Scarlett shared a sweet moment with Jonathan Rhys Meyers at the premiere of Match Point in 2005.

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Scarlett and Chris Evans shared a kiss on the set of The Nanny Diaries in 2006.

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Scarlett showed off her little black dress at the premiere of The Black Dahlia in 2006.

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Scarlett sent out a wave in a curve-hugging dress at the Grammys in 2007.

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Scarlett clowned around at Harvard while accepting her Hasty Pudding Woman of the Year honor in 2007.

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Scarlett showed off a white chiffon dress on the red carpet in 2008.

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Scarlett donned a neon yellow minidress while attending Spike TV's Guys Choice Awards in 2010.

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Scarlett posed on the red carpet at the 2011 Oscars while a dazed Jeremy Renner looked on.

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Scarlett attended the Costume Institute Gala at NYC's Metropolitan Museum in May 2012.

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Scarlett made a little boy's day by signing an autograph at The Avengers premiere in Hollywood in April 2012.

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Scarlett posed with her brand-new star on the Hollywood Walk of Fame in May 2012.

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Scarlett looked great at Berlin's Goldene Kamera awards in 2012.