Khloé Kardashian is considered a "huge mother figure" to little sis Kylie Jenner.
In an interview with Cosmopolitan, the 17-year-old model said she feels so much "love and respect" for her half-sister for being a "mother figure" in her life.
"She has always been the strictest on me - taking away my cell phone, having my passwords to everything," Kylie told the magazine for its February edition. "It made me love and respect her so much because it just showed that she cared. [She's a] huge mother figure in my life."
But Khloé isn't the only one in the family to look out for the youngest Keeping Up With the Kardashians sibling.
"If a guy does one little thing to me, then you're dealing with, like, six other girls," Kylie said of the support she receives from her family.
Big sis Khloé, who seemed touched by her sisters endearing words, posted Kylie's comments to her Instagram account with the caption: "I'll always be your mommy sister LOL you are my heart."
Meanwhile, the girls mother, Kris Jenner, is struggling over her nest that is emptying more quickly than she would like.
"One day, I know that I'll look around and they'll all be gone. It's so fast," Kris said back in December.
"Kylie] keeps reminding me daily that she's 17 and there's only a few months left until she's 18. I ignore her because that's going to be weird and hard," she said.
— Radar Online (@radar_online) January 10, 2015
"Khloé bought a house this year, and Kourtney bought a house this year, and Kendall bought a house this year, and Kim bought a new house this year. I do feel a little bit like it's an empty nest," Kris lamented.