Dayum!Taylor Swift, Zac Efron, and More Celebrities Who Have Really Hot Brothers – See Then-and-Now Pics

See Billie Eilish’s Bikini Pictures and Swimsuit Moments!

Kylie Jenner Has Worn Some Iconic Bikinis! See Her Best Swimsuit Photos

Carmen Electra's Sexiest Bikini Looks As She Turns 50: Smoldering Pics

Zendaya’s Bikini Pictures Are Fantastic! See Her Best Swimsuit Moments

Get Ready to Be ~Blown Away~ By Carrie Underwood’s Swimsuit Photos
It's always a bit jarring when a celebrity's sibling goes from being cute to really, really hot. Such is the case for these celeb brothers.
RELATED: They're All Grown Up! See What Celebrities' Younger Siblings Look Like Now
Click through the gallery to see Taylor Swift, Zac Efron, and more stars' siblings transform right before your eyes.
1 of 18

Getty Images
Emma Watson and her younger brother Josh in 2007.
Click to the next slide to see what he looks like now.
2 of 18

Getty Images
3 of 18

Getty Images
Blake Lively's little brother Eric in 2001.
4 of 18

Getty Images
5 of 18

Getty Images
Miley Cyrus and her younger brother Braison in 2007.
Click to the next slide to see what he looks like now.
6 of 18

7 of 18

Getty Images
Taylor Swift and her younger brother Austin in 2009.
Click to the next slide to see what he looks like now.
8 of 18

Getty Images
9 of 18

Getty Images
Lauren Conrad with her little brother Brandon in 2008.
10 of 18

Brandon today.
He's 24-years-old.
11 of 18

Getty Images
Jessica Alba and her younger brother Josh in 2001.
Click to the next slide to see what he looks like now.
12 of 18

Getty Images
13 of 18

Getty Images
Kate Hudson and her older brother Oliver in 1999.
Click to the next slide to see what he looks like now.
14 of 18

Getty Images
15 of 18

Getty Images
Penelope Cruz with her younger sister Monica in 2006.
16 of 18

Getty Images
17 of 18

Getty Images
Zac Efron and his younger brother Dylan in 2011.
Click to the next slide to see what he looks like now.
18 of 18


See Billie Eilish’s Bikini Pictures and Swimsuit Moments!

Kylie Jenner Has Worn Some Iconic Bikinis! See Her Best Swimsuit Photos

Carmen Electra's Sexiest Bikini Looks As She Turns 50: Smoldering Pics

Zendaya’s Bikini Pictures Are Fantastic! See Her Best Swimsuit Moments
