It's Kylie's 18th birthday party and she will cry, and invite who she wants, too. In a new preview for the next episode of "Keeping Up with the Kardashians," Khloé and Kourtney Kardashian learn together that the youngest member of the family, Kylie, was having an extravagant 18th birthday bash, but the two sisters did not seem to make the 300-person guest list.

"What a little b---h Kylie is," Khloé says. "I'm calling her now."

When Khloé finally gets ahold of her little sister on the phone, she insists that she isn't telling anyone about the party until she got the full details of the event. Khloé and Kourtney explain to Kylie that they need the date due to their busy schedules.

"What if we're busy?" Khloé asks. "I have an event on August 10th."

"Where?" Kylie asks.

"San Fransisco," Khloé tells her.

"Well can you fly back from San Fransisco or something?" Kylie responds.

"If you beg me hard enough," Khloé says, before asking, "Who would you most want to come out of all your sisters?"

Check out the clip below to find out Kylie's answer!

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