Lookin' Great, Ladies -- Khloé Kardashian Shares A HAWT Gym Pic, And Calls Sis Kourtney A MILF!

Well our Saturday afternoon just got a whole lot better! Khloé Kardashian was apparently workin' on her fitness today along side big sis Kourtney — and you just know the two KUWTK stars had to post about it! Related: Khlo Makes This Week's List Of Best-Dressed! Khlo — who's deep in the throes of her new show Kocktails