The Kardashian family needs to make room for one more.
In the first of several messages, Jenner, 64, shared an image of herself and Lawrence cuddling on a bed, acting surprised while reading a book.
“Happy birthday Jen!!!” said the first note.
A second photo depicted the two hugging one another.
“You are the most amazing girlfriend, wife, daughter and my favorite daughter today!!!!!” The reality star joked.
A third image showed Jenner speaking into a microphone while Lawrence stood by her, laughing. Both clutched cocktails in the shot.
“Thank you for your friendship, love, and so much laughter my sides hurt,” she continued.
Alongside a picture of the two smiling with a friend, Jenner concluded: “I love you so much!!”