We all know the best way to shed the pounds is by getting dumped!

Kourtney Kardashian revealed her slim figure on Instagram but admitted that she's lost all the weight because she, "can't eat."

Along with the photo which showcased the slim reality star in a black sports bra and matching leggings featuring sheer panels, Kourt wrote, "Coping with anxiety" and linked fans to her blog post.

The 36-year-old, "I'm generally not a nervous person but I get anxious. I also get nauseated; I feel like I can't eat when it is really bad, but I force myself to stay healthy."

The mom of three explained that the way she deals with her anxiety is to exercise five days a week.

Meanwhile, Kourtney's boytoy Justin Bieber is finally commenting on his fling with the stressed out mama. In an interview for the radio show The Bert Show that was taped back on Dec. 17, the "Sorry" singer faced questions about his romantic relationship with Kourtney.

The 21-year-old joked, "I'm being used, man. What can I say?" Host Bert Weiss asks, "Anything there?" Bieber replies, "Nah, we'll leave it at that."

The popstar then said he's got nothing for love for Kourt and added, "But for real, she's great. I've known [the family] for years."

We think they are both using each other -- but we don't mind, we love all the hot gossip!