By Lynette Rice
Updated June 02, 2015 at 02:34 PM EDT

Caitlyn Jenner may have kept her family in the loop about her transition, but it sounds like some details didn’t make their way to stepson Rob.

Kim Kardashian told Access Hollywood that her brother Rob didn’t recognize Caitlyn Jenner, formerly known as Bruce Jenner, when he first saw her image on the cover of Vanity Fair.

“(Rob asked) Kim, why are you sending me this? Who is this woman and why do I care?” Kardashian said. “‘Rob, that’s Bruce! That’s Caitlyn!’ He was like, ‘Oh my God, she’s beautiful!’ Then he called her and they had a love fest.”

Rob Kardashian has been absent from Keeping Up with the Kardashians this season. One episode focused on how the family wanted to stage an intervention to address with his withdrawn state.