Kim and Kourtney Kardashian are reportedly engaged in a bit of a competition with each other’s weight. Before Kourtney lost all of her baby weight, Kim was the top dog for having a curvy figure with a gigantic butt.

Now that Kourtney is looking good, Kim’s said to be insecure about her body. And now, they’ve gotten pretty competitive about the weight war.

A source said, “They are always looking at each other’s body and picking it apart. She always makes fun of Kim’s ‘lumps,’ meaning her cellulite.”

In Touch Weekly reports:

According to a Kardashian confidante, it’s a battle that’s been raging between the two women since childhood. With Khloé, 26, considerably younger and always a bit bigger than her two sisters, Kourtney and Kim engaged in fierce competition as teenagers over who had the hottest, slimmest body — and who got the most attention from boys. Of course, now it isn’t just dates the girls are fighting over — it’s money, fame and airtime. Although Kim used to be far and away the most famous Kardashian sister, she’s seen Kourtney get more attention over her new baby and her tumultuous relationship with her boyfriend, Scott Disick. And now that’s she’s lost the baby weight, Kourtney seems to be taking Kim’s place as the hottest star of Keeping Up With the Kardashians. “Kim isn’t about to give up her throne without a fight,” says another family friend. Dressing up, hitting clubs — and working hard to slim down — Kim is determined to take back the lead role in her famous family.

Are you buying it?

Source, Fame Pictures