Kendall Jenner Skinny: Kardashian Sister Fights Back Against Weight Criticism [VIDEO]

Kendall Jenner has become a force to be reckoned within the modeling world, and at 17-years old, the younger Kardashian is learning just how harsh the fashion world can be.

While gracing the cover of the April issue of Harper's Bazaar Arabia, the 5-foot-10-inch " "Keeping Up With the Kardashians" star speaks candidly about being bullied for her weight.

"I'm constantly criticized for being too skinny," said Kendall. "I'm trying to gain weight but my body won't let it happen. What people don't understand is that calling someone too skinny is the same as calling someone too fat. It's not a nice feeling."

While Kendall has been coming under fire for her slight frame, she has a big support system to back her up. Just this afternoon, Kendall joined her younger sister Kylie, 15, as the two shared giant cupcakes at the Crumbs.

It seems that her half-sisters also help Kendall through tough times.

In Harper's Bazaar Arabia, Kendall states how her three older sisters help her when she's down.

"I go to them for different things," she said of her famous siblings. "Khloe is like my second mom, so whenever my little sister and I are fighting or we're fighting with our parents, we call Khloe."

It seems as though Khloe goes above and beyond to protect her younger sisters, even posting a video message to fans showing Kendall enjoying ice cream through the app Keek.

Mar 7, 2013 | Ice cream yummy dreams by KhloeKardashian on Keek.com

Kendall continued to discuss her support system citing mother of two Kourtney as "very realistic with things. She will tell you the cold, hard truth, even if it will make you cry, so whatever you're dealing with, if you want to talk to her, she'll be very realistic."

And as for Kim, who also graced the cover of Harper's Bazaar Arabia, Kendall said that in addition to being "super smart and really tech-savvy," the pregnant starlet is also a good listener. "She's been through a lot, so we can go to Kim with anything and she'll have literally the best advice."