Rob Kardashian
Rob KardashianReuters

Kris Jenner has opened up about her son Rob Kardashian, and shared that he is "struggling" with some personal issues.

The 27-year-old sock designer did not attend Kim Kardashian and Kanye West's wedding in Florence, Italy on 24 May, after she reportedly commented about his weight gain. He has withdrawn largely from public life of late and also unfollowed half his family from Twitter.

During an interview with E! News, the Kardashian matriarch said she is trying to be there for him at this sensitive time.

"Rob is living in L.A. right now and he's doing well, finding out what makes him tick and struggling with some stuff," she said. "My job is to be there for him and to love him as hard as I can. Everybody goes through stuff."

Rob has been working out with longtime friend and celebrity trainer Gunnar Peterson, according to People Magazine. The two have been working out together, on getting him back to shape.

"I think Rob knows exactly what to do. He's worked out [before] and he's focused. We're doing intervals with strength movements: squats, the sled, swings and push presses. It's about getting his heart rate up and keeping it up," Peterson said.