exercising kim kardashian reality tv filming Kourtney Kardashian exercising kim kardashian reality tv filming Kourtney Kardashian Would you really expect the girls not to be filming?!

Kim and Kourtney Kardashian went on a beach run with pal Larsa Pippen in Miami this morning, and the ladies seemed to have no problem getting sweaty, even though the Kourtney & Kim Take Miami crew was documenting the entire fitness session for an upcoming episode of their reality series.

It appears Kimmy K is doing her best to shed the 15-20 pounds she's reportedly gained since she began dating boyfriend Kanye West. The E! darling admits she's battling the bulge, but doesn't seem to be stressing too much about it. "I'm hoping to slim down a little bit, and I'm not afraid to say it. I think everyone goes up and down in whatever that comfortable love relationship phase is where you like to eat out, but now it's time to get it together again" she recently told Life & Style.

Not that Yeezy minds her fuller figure!

"She feels so comfortable around him - he loves her curves - she hasn't been vigilant about dieting," a source told the mag.

Her mom-of-two big sister, however, has had laser focus on getting her pre-baby body back since giving birth to daughter Penelope Scotland in July, and by the looks of it she's well on her way!