Rob Kardashian has been slowly and surely clawing his way back to a healthy weight after gaining over 40 pounds following the breakdown of his relationship with Rita Ora.

However, Rob Kardashian, 26, still looked chubby at a Neiman Marcus event in Las Vegas to promote his sock line, Arthur George, and admitted that he’s still got a long way to go.

“I still have to lose like 40 to 50 pounds believe it or not,” Rob Kardashian told Us Weekly at the event.

Before adding: “Six months I should be there.”

Rob Kardashian told the same magazine he weighed 235 pounds in March and was throwing himself into daily work-outs but revealed he has now recruited Lamar Odom’s trainer to help him shed.

He told the magazine: “I’m kind of doing my own thing with Lamar [Odom]’s trainer. He’s on salary since he was 19 years old, so he works for us. I’ve been spending time with him.”

Rob Kardashian also revealed his cutting out alcohol to keep down those empty calories.

Rob Kardashian weighed 235 pounds in March and was throwing himself into daily work-outs but revealed he has now recruited Lamar Odom’s trainer to help him shed

In a Kourtney & Kim Take Miami episode aired in February, Rob Kardashian blamed his weight gain on his break up with Rita Ora.

He said: “It’s crazy how this whole year, my whole relationship was only negative, all I did was gain f***ing 40 pounds and lose so much money.”

Rob Kardashian’s chubby face didn’t put off his girlie fans at the event on Saturday.

The reality star who jokily calls himself “fat boy Rob”, was joined at the Neiman Marcus footwear function by his mother Kris Jenner.

Kris Jenner, 57, proudly posed behind her only son and excitedly held up a handful of his colorful socks at the store’s display.

The Arthur George designer was famously accused of being a “jobless loser” by his sister Kim Kardashian on a 2011 episode of Keeping Up with the Kardashians.

Rob Kardashian, who topped the scales at 240 pounds, has been trying to ditch the weight he gained after his breakup with British singer Rita Ora.

“I’m trying to lose 40 [by the fourth of July],” he told People Magazine in March.

“It’s a little journey.”

Rob Kardashian reportedly exercises in the morning with his trainer and then usually joins his friends on hikes, including his former dance partner Cheryl Burke.