Superstars like Justin Timberlake and Justin Bieber always make us weak in the knees. After all, they can sing, dance and have charisma for days! Both of these entertainers are extremely talented, but which one is more swoon-worthy?

JT was just honored with the lifetime achievement award at the MTV VMAs, and for good reason. In addition to his successful career with 'N Sync, Justin has best-selling solo records and a film career. Throw in his clothing line, William Rast, and his restaurants, and you have one multi-dimensional star.

The Biebs has also had a successful musical career. After capturing tween hearts everywhere with 'Baby,' Justin continued to crank out a slew of hits. What else would you expect from Usher's protege?

Which of these superstars is the total package? Vote in the poll below!

Justin Timberlake

Vittorio Zunino Celotto, Getty Images

Justin Bieber

Jason Merritt, Getty Images