Reality TV star Kourtney recently revealed she is expecting her second child with boyfriend Scott Disick in May and Kendall wants them to have a baby girl this time because she thinks their firstborn son, Mason, two, would be a protective Big Brother.
Kendall told E! Online: "I want [Kourtney] to have a girl. It would be so cute because when they're older, Mason could be like the protective big brother. And I feel like Kourtney could have fun with a girl-dress her up in little tutus and everything."
16-year-old Kendall - who is set to star in her own reality TV show with sister Kylie, 14 - also revealed she wants to break into acting and has a huge crush on Ryan Gosling.
She said: "I wouldn't do acting as my full-time career. But I think it would be fun to do something just for fun, just to do a movie for fun.
"I love movies like 'The Notebook'. That's why I like Ryan Gosling. I love those romantic movies that you wish could happen to you but they never do."