Zac and Dylan Efron
It's no secret that Zac Efron is one of the most attractive celebrities on the planet, so it's only natural that his little bro Dylan is quite the looker himself.
Blake and Eric Lively
Blake Lively's brother Eric tends to stay out of the spotlight, but when we do get a glimpse of him we definitely do not complain.
Robert, Victoria and Lizzie Pattinson
Imagine being the sister of Robert Pattinson? Lizzie and Victoria must constantly get hounded by their single girlfriends to hook 'em up!
Kate Hudson and Oliver Hudson
Kate Hudson's older brother Oliver was lucky enough to also inherit his mom's great hair and good looks.
James Franco and Dave Franco
James Franco is one of our faves, so the fact that his brother Dave is almost his twin makes us want to bow down to the Franco parents.
Taylor Swift and Austin Swift
We're kinda surprised Taylor Swift hasn't used one of little bro Austin's past relationships as the subject of a hit song yet, to be honest.
Julianne and Derek Hough
The dancing duo of Julianne and Derek Hough first graced our screens on Dancing With The Stars, but knew each other for way longer than that—they're only three years apart in age!
Maggie and Jake Gyllenhaal
Maggie and Jake Gyllenhaal are not only incredibly talented, but they're also extremely attractive. What do we have to do to get some of those genes?
Donnie Wahlberg and Mark Wahlberg
Donnie and Mark Wahlberg are some the most famous brothers of all time, so it's only natural that we included these boy banders on our list!
Monica Cruz and Penelope Cruz
No, you're not seeing double—Monica and Penelope Cruz are three years apart in age yet look shockingly like twins.
Alex and Emma Watson
If we were Alex Watson, we would've definitely gone around asking Emma to do magic tricks every day. Wouldn't you if your sister was Hermione Granger?
Prince William and Prince Harry
It doesn't get hotter than Princes William and Harry! Someone sign us up to be Kate Middleton's sister-in-law stat!
Pippa and Kate Middleton
And speaking of Kate Middleton, she and her little sis, Pippa, get the gorgeous award for like, life. If that royal baby is a girl, she has a life full of being beautiful to look forward to.