Rob Kardashian has made a rare appearance, after not being seen out in public since January. The young reality star was spotted at LAX with his momager, Kris Jenner, and is likely heading to France for older sister Kim’s wedding. Rob was dressed in all black, and while reports claimed he was at fat camp, he still looks quite large these days.

(View photos here.)

Last month, the 27-year-old reportedly checked himself into rehab at The Meadows trauma and addiction treatment center in Arizona. According to reports, Kardashian gained weight due to smoking marijuana, drinking alcohol and prescription cough syrup. “Rob has been checked into The Meadows for about a month for substance-abuse issues,” a source tells Star magazine. He started gaining weight after a bad breakup with singer Rita Ora last year.

In April, he posted a sad message on Twitter that led to concern from his fans. Rob had deactivated his social media account months ago, but reactivated it briefly last month. “No one will ever understand how much it hurts,” he wrote to his nearly 5 million followers. Though he did not elaborate further, Kardashian was likely referring to his weight struggles.

On the mid-season finale of "Keeping Up With The Kardashians," in March, viewers watched Rob break down after opening up about his battle with the bulge. The episode revealed that Rob’s health has been declining since gaining a significant amount of weight.

“If he doesn’t change his lifestyle right away, he’s going to end up diabetic and his organs are going to shut down,” Kris told daughter Kim, in response to his blood tests results.

Meanwhile, his sister Kim has lost a significant amount of weight as she prepares for her May 24 wedding to fiancé Kanye West. The two are expected to wed in Italy, though earlier reports stated they were marrying in France.