Kim, Kourtney and Khloé Kardashian pack their bags and head for the East Coast during Season 11, episode 8 of E!'s hit show "Keeping Up With the Kardashians." The trio, along with their younger sisters Kendall and Kylie Jenner, were in New York City for several exciting things: the launch of their five individualized apps and Fashion Week. As is always the case with these famous siblings, the trip had no shortage of fun or drama.

The episode kicks off with Kourtney, 36, visiting mom Kris Jenner at her Calabasas, California, home. She instantly grows angry while discussing the app launch because, as she's just learned, hers won't be ready by then. The mother of three demands that her momager get on the phone with the two people working closely with them on the apps to discuss why hers isn't ready yet. Kris, 60, insists her daughter dropped the ball, missing meetings and procrastinating, but Kourtney vehemently disagrees. She considers canceling her travel, but after speaking with her mom and those developing the app she decides it's in her best interest to go.

Shortly after landing in New York the siblings, joined by Kylie's boyfriend Tyga and a few other friends, head out to dinner. During the meal the conversation shifts to the app launch-related things they're doing and what Kourtney should say when asked why hers won't be ready. Kourtney wants to be honest with fans, telling them she had her youngest son, Reign Aston Disick, during the same time the app was due, but Kim, 35, urges her not to. She tells her older sister that she is "not special," insinuating that the delay is her fault. Fortunately the girls are able to avoid further confrontation as they begin reminiscing about group trips they've taken together. Khloé, 31, laughs as she recalls a time when Kourtney was punched in the face while waiting on a bathroom line in a restaurant.

The ladies then head out for a night on the town together where more drama ensues. After getting everyone — including Kourtney, who generally turns down a wild night out — to go to the club, Kylie, 18, leaves the club early at Tyga's urging. Khloé tells her sister it's "f---ed up" for her to leave, but she does it anyway. This further worries Kim, who is already concerned about her sister appearing in Kanye West's Yeezy Season 2 fashion show. Kim has heard from several people that Kylie is a "diva on set," brings all her friends along and is constantly on her phone. She finally confronts Kylie about it, pleading with her for the sake of her career to be professional. Kylie takes her sister's advice to heart and agrees to give it her all. 

"Keeping Up With the Kardashians" airs Sundays at 9 p.m. EST on E!