Kylie Jenner confirmed earlier this month that she and Travis Scott are expecting their second child together, and her sister Kendall said she “wasn’t shocked” by the news.

Appearing on the Tonight Show Starring Jimmy Fallon, Kendall Jenner revealed how her younger sister broke the news to her. "She called me and I answered the phone and she just had a picture of her sonogram," the 25-year-old told Fallon of her 24-year-old sibling. "I wasn’t really shocked, because I felt like it could happen some day soon. But I was excited, I was very excited. It’s just a blessing, it’s amazing."

With another child in the family on the way, Fallon asked Kendall if she’s “a good babysiter,” to which she admitted she’s only “alright.” She added, “I always wanna be the cool aunt. There is 18 of them now going on 20. There’s two on the way. My brother Burt [Jenner] has one on the way, and then my sister obviously just announced hers. It’s fun, it’s really fun. I try and be chill. I stress out about enough already." 

Earlier this year, Jenner confirmed that she was dating Phoenix Suns shooting guard Devin Booker, and even he’s got in on the babysitter empire with the Kardashian family. “He loves them,” Kendall said of Booker’s relationship with her family. “Him and Stormi have an amazing relationship. She has the biggest crush on him, and I'm like, jealous sometimes. I'm like, 'Stop—can you guys not?"

Jenner also got quizzed on her famous Kardashian quote knowledge on the show, and she was immediately hit with, “Would you stop taking pictures of yourself? Your sister’s going to jail.” She added that it’s “one of her favorite” quotes from Keeping Up with the Kardashians

Watch both portions of her appearance on the Tonight Show above.