Recently, we switched gears from the Hot Twitter Girls to bring you some equally sexy girls on Instagram. And, with 4 beautiful babes to rock your eye sockets in the month of October, it's time to vote on which one will be the Hot Instagram Girl of the Month.

Jenna Presley, Riley Steele, Shonda Mackey and Bar Refaeli are all vying for your votes. So, take a peek at their original posts, then vote on which you think should be the Hot Instagram Girl of the Month for October. Voting has never been sexier.

Jenna Presley

Jenna Presley Instagram

Riley Steele

Riley Steele Instagram

Shonda Mackey

Shonda Mackey Instagram

Bar Refaeli