Popsugar Celebrity And Entertainment Zac Efron Celebrities With Their Siblings | Pictures Celebrity Siblings You Probably Didn't Know About 28 January, 2016 by Britt Stephens 4 Shares View On One Page Photo 6 of 86 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 6 Jessica and Joshua Alba Jessica's younger brother Joshua is also an actor, who appeared alongside her on the TV series Dark Angel. Previous Next Start Slideshow Zac EfronEmma WatsonNicole RichieGwyneth Paltrow