Entertainment TV Rob Kardashian Wishes 'Beautiful Mama' Kris Jenner a Happy Birthday Kris Jenner turned 60 on Thursday By Michele Corriston Published on November 6, 2015 09:35 AM Share Tweet Pin Email Trending Videos Photo: Denise Truscello/WireImage As he remains out of the public eye, Rob Kardashian took to social media Thursday to celebrate momager Kris Jenner‘s 60th birthday. “MAMA I LOVE YOU!! P. O. P. Holding it down…. HAPPY BIRTHDAY TO MY BEAUTIFUL MAMA,” Kardashian, 28, captioned an old photo of the mother-son duo eating out at a restaurant. The Keeping Up with the Kardashians star has secluded himself over the past few years after battling depression and gaining more than 100 lbs., though he started posting Instagrams and tweets suggesting he’s getting back into the exercise grind this summer. https://instagram.com/p/9uXirRJWb_/ Khloé Kardashian recently opened up to PEOPLE about her brother’s struggles. “I’ve offered to get a chef, I’m like, ‘What’s your excuse?’ But it’s not just that,” she said of the Arthur George sock designer, who lives in her Calabasas, California, mansion. “I can’t win life for Rob. I have to wait until [he’s] ready to do it for himself.”