Kylie Jenner is still nervous when she has to do a red carpet interview without her elder sister Kendall Jenner. In a new sneak-peek for Sunday's episode of Keeping Up with the Kardashians., Kylie felt "sick" and was going to "faint" when she was about to do a solo red carpet interview at the 2015 Billboard Music Awards back in May.

“Now I feel too sick. No, I feel like I’m really gonna faint,” she said before subsequently trying to move away from the interview spot.

Both Kylie and Kendall attended the awards event together. However, they had to part their ways as Kendall was promoting her H&M and Balmain campaigns.

Kylie told Kim Kardashian that she felt like she was having a panic attack on the red carpet. “I really wish Kendall had been with me,” Kylie said to Kim. They posed for photos together, but Kendall was concentrating on working and wasn’t really paying attention to her sister, so Kylie was left to talk to reporters by herself.

"It's kind of weird cause Kylie and I usually do carpets together but I'm actually with H&M and Balmain and I really on my work 'cause that's what I am here for," Kendall said.

Because of her contracts with the fashion lines, Kendall even had to ask permission for taking a photo with her younger sister.

“Am I not supposed to? Should I not take a photo with her?” Kendall asked. They were then allowed to take one photo together before going their separate ways.

Kylie, who was scheduled to do an interview on the red carpet, said, “I totally understand that Kendall has these work obligations, but I’m getting super nervous and anxious about doing these interviews.

“I really wish Kendall was going to be with me. I like, have a few seconds before I faint,” she said. -

Bruce’s transition wasn’t easy for any of the sisters. Later in the episode, Kendall revealed that she’d been struggling and hesitant to meet Caitlyn. “I feel like it’s a process,” she told Khloe. “It’s something to get used to for sure…It’s also a letting go thing,” Kendall said. “When you officially meet her it’s like, he’s gone.”

Watch the clip below.