Kim Kardashian Hires Personal Trainer for Pregnancy Workouts Denise Truscello/WireImage/Getty Images Kim Kardashian has kept up her fitness regimen during her pregnancy and is so determined not to let herself go that she has hired celebrity trainer Tracy Anderson. Anderson, whose client list includes Jennifer Lopez and Gwyneth Paltrow, told US Weekly she's working with Kardashian to develop a fitness routine that will work for both her and her baby. Kardashian is 13 weeks pregnant. RELATED: Kim Kardashian's Sexiest Looks The celebrity trainer said Kardashian is exercising "with caution, and she's listening to her body; she's not overdoing anything. ... I'm so proud of her." Anderson said she's been very impressed with Kardashian's work ethic and believes that she should take to motherhood easily. I think she's going to be a really natural mom. ... You can see that she has a real love for and a real connection to babies. I think right now she seems like a very in-tune, very together pregnant mom who has that first baby glow," Anderson said. RELATED: Kim Kardashian's Divorce Gets Nasty