Rob shared several videos of his 35-year-old sister on Instagram to let fans know how she felt about his engagement.
The "Keeping Up With The Kardashian" star used a baseball-themed filter in the first video. "In honour of Rob's big day," she said. Rob captioned the brief video with, "Sister love."
The mother of two used a teary eyed filter in the second video and said "Rob, we need to talk!," while pretending to cry.
"Had to post this snap my sis sent me. LOL she's got jokes! #KimsCryFace," Rob captioned the video.