American singer-songwriter, actor and businessman Justin Timberlake turns 31 today! Timberlake was born on Jan. 31, 1981.

The former 'N Sync lead singer made his musical debut as a contestant on "Star Search", a television talent show that ran on the Disney Channel. He later went on to star in Disney's "The New Mickey Mouse Club", which was where he met future band-mate (and 'N Sync co-founder) JC Chasez and, dramatically enough, his future girlfriend, Britney Spears; he also met fellow music sensation Christina Aguilera.

'N Sync came together in 1995 and gained a degree of prominence (primarily in Europe) in 1996, before bursting on to the pop scene in 1998, with the release of an eponymously named album.

Unfortunately, 'N Sync ran out of steam in 2002, which was also when he released his debut solo album - "Justified" - which sold more than 7 million copies worldwide.

He has since become a hugely popular musician and, more recently, an actor - "The Social Network" (2010), "Bad Teacher" (2011) and "Friends with Benefits" (2011). As a measure of his success, he has six Grammies and four Emmy Awards to his credit.

On the romantic front, Timberlake and Britney Spears were involved in a high-profile relationship which, according to him, lasted for more than a decade... not a moment of which was spent away from the spotlight. The couple finally split in March, 2002.

Other flames include fellow singers Beyonce Knowles and singer-actress Stacy Ferguson, as well as actresses Alyssa Milano and Cameron Diaz (with whom he starred in "Bad Teacher").

Currently, of course, Timberlake has announced his engagement to actress Jessical Biel, according to a report in US Weekly.

Check Out Some of Justin Timberlake's Best Moments...

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Actor and musician Justin Timberlake after the final round of the Justin Timberlake Shriners Hospitals for Children Open at the TPC Summerlin on October 2, 2011 in Las Vegas, Nevada.facebook
Cast members Timberlake and Seyfried pose photographers next to Brandenburger Tor in Berlin.reuters
Actress Biel and singer Timberlake arrive at the Metropolitan Museum of Art Costume Institute Benefit in New York. Justin Timberlake and Jessical Biel may have become engaged over the holiday season, according to a report in "US Weekly."reuters
Justin Timberlake and Jessica Biel are finally engaged. There have been rumors along those lines for days, but the assumptions were confirmed by witnesses who saw the "Rules of Attraction" star sporting a healthy rock at a "Saturday Night Live" after-party over the weekend.Reuters
Justin Timberlake taking his Mom Lynn Harless to the 2011 Oscar.facebook
A still from "Friends With Benefits" movie.facebook
A still from "Friends With Benefits" movie.facebook
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Justin Timberlake and actress Cameron Diaz dated from 2003 to 2006, but couldn't make it work in the end.Reuters
Performers Beyonce Knowles and Justin Timberlake attend the nominations press conference for the MTV Video Music Awards in New Yorkreuters