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 81 of 86 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 81 Audrina and Casey Patridge Audrina, who starred on The Hills, has a younger sister named Casey. She is married to professional dirt-bike rider Kyle Loza and has two children. Previous Next Start Slideshow Zac EfronEmma WatsonNicole RichieGwyneth Paltrow