JustinBieberWillJada_082611.jpgTrey Smith had a Twitter imposter, but Justin Bieber's account is very real. So he's coming to the Smith family's defense in the middle of Will and Jada divorce rumors.

Will and Jada's son Jaden Smith is one of Justin's best friends - he even appeared in the Biebs' 3D movie Never Say Never - and their daughter Willow Smith went on tour with the "Baby" singer.

So it's no surprise that Justin took to Twitter Thursday to defend the people he considers his second family. He wrote:

    "Will and Jada are one of the best couples ever. #FACT #real."

Jaden and Willow may not be his real little brother and sister, but Justin always comes to their aid! Now that's a good faux-sibling.