Kourtney Kardashian has debuted her daughter, Penelope, on the latest cover of Us Weekly. Penelope's older brother, Mason, appears alongside mother and daughter on the magazine's cover.

Inside, the reality mom opens up about expanding her family from three to four with the addition of Penelope Scotland back in July. "Nothing could prepare me for how hard I fell in love with her," she told the magazine. Penelope gets her middle name from her dad, Scott Disick.

Penelope was born July 8 in Los Angeles at Cedars-Sinai Medical Center, weighing in at 7 pounds, 14 ounces. As Penelope celebrates her one-month birthday this week, fans of "Keeping Up With the Kardashians" will get the inside scoop on Kourtney's pregnancy on the show.

On last week's episode, Kourtney consulted with her sisters about the idea of a natural water birth. "I think it's important to talk to my sisters when I have a big decision to make," she wrote about why she asked her sisters for their advice. "Even though at the end of the day, it's my own choice, it's good to hear everyone's view and keep that in mind when I make my final decision."

The 33-year-old announced her pregnancy back in November. At the time, Disick admitted that baby #2 wasn't any more planned than baby #1, though surely they're a bit more prepared for life as parents this time around. "It wasn't like we weren't trying," Scott said. "We kind of just said, 'If it's meant to be, it'll be.' "

Several months after they announced they were expecting, Kourtney announced that she was having a girl. She shared with her fans, "We feel so blessed to be having a little girl and to be able to share this new experience with Mason."

Shortly before giving birth, Kourtney announced she wasn't sure she was willing to include the birth on one of her hit E! shows this time around. "I don't know," she said in an interview on "The Tonight Show." "We're gonna film it again ourselves, and honestly, my experience last time was so peaceful and calm and everything you don't see in the movies. And I really wanted to share that with people so they knew it doesn't have to be a crazy screaming session."