For several years now, we've featured some of the hottest ladies on Twitter with the Hot Twitter Girl of the Week. Now, it's time to shift gears a little bit and treat you to some of the hottest girls on Instagram. And, what better way to kick it all off, than with one of sexiest girls of them all - Bar Refaeli.

Bar is an Israeli model who has done plenty of acting as well. She has been featured in Sports Illustrated, Maxim, GQ, and a ton of other magazines. She's also been all over the web - as well as the minds of many men all over the world.

For more on Bar, check her out on  Instagram and Twitter.

Hot Instagram Girl of the Week - Bar Refaeli