Khloe Kardashian Brings Brother Rob To Her Gym For New Exercise Program

Khloe Kardashian is taking her brother Rob's weight problem serious, by going as far as to accompany him to her gym to make SURE he gets his butt in shape!

Khloe turned up to her trainer Gunnar Peterson's gym in Beverly Hills today just moments after we spotted Rob on his way in to the studio.

As X17online was the first to show you exclusive photos of Rob on his way to Paris for sister Kim's wedding -- looking heavier than ever after a supposed trip to fat camp, we also broke the news that Rob skipped out on the big day after a family feud over his weight.

After Rob's physical state AND his state of mind cause so much wedding drama, Khloe is determined to get her brother back in shape, a source tells X17online: "Khloe feels like it's her responsibility to help Rob. After everything that happened with Lamar and the three of them living together and throwing Rob off-track, Khloe feels kind of responsible for Rob's weight gain. She wants to help him now."

We're gunning for Gunnar to get Rob back on track!