A new preview for I Am Cait, an eight part docuseries that gives us a look into Caitlyn Jenner's life, shows the sweet, touching moment Kylie Jenner met Caitlyn for the first time.
WATCH: 6 Heartfelt & Revealing Moments From the 'I Am Cait' Premiere Episode
"Hey, pretty!" says Kylie, 17, who admitted it might be a little "uncomfortable" in the beginning, but that she did want to meet her.
"Hey, baby! I didn't know you were here," responds Caitlyn.
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Then Caitlyn shows Kylie a picture of Kylie's grandmother, Esther, from when the eldest Jenner was Kylie's age.
"Here's the kicker," Caitlyn says, "She was 17 years old in this picture, and she was married."
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"Kinda like me," Kylie jokes, who is dating 25-year-old rapper Tyga.
Even though it was their "first meeting," these two family members share a strong bond, and are far from strangers. On Father's Day, Kylie uploaded a heartwarming Instagram with Caitlyn writing, "Happy Father's Day my little light of sunshine. 'You can still call me dad, Kylie. No matter what I'm always going to be your father. That's never going to change.'"
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I Am Cait premieres Sunday at 8 pm on E! Watch the most revealing moments from the premiere below.