WATCH: Khloé Kardashian Recalls Kendall Jenner Being ‘So Drunk’ on Her 21st Birthday

When you’re in the Keeping Up with the Kardashians clan, your birthday is always an over-the-top extravaganza.

According to Khloé Kardashian, that was the case for Kendall Jenner’s recent 21st birthday. While appearing on Jimmy Kimmel Live on Thursday (Nov. 4, 2016), the reality star revealed that her sister was gifted a Rolls-Royce at her star-studded party.

However, Jenner was apparently too drunk to remember the lavish present.

“We go outside and there’s a Rolls-Royce and this man standing there. And I’m like, ‘Who’s the gift: The guy or the car?'” she remembered. “And then this guy just hands Kendall a pair of keys to this car … This morning, I was like, ‘Holy crap, that’s so cool you got this car! How did you get it home?’ And she’s like, ‘Oh my god, I forgot I got a car last night!'”

“That’s how drunk she was,” Kardashian explained. “She was so drunk for her 21st birthday.”

Kardashian also spoke about her brother, Rob Kardashian, preparing to welcome his first child. Though, as depicted on their show, his relationship with Blac Chyna hasn’t always been smooth sailing, Kardashian believes the father-to-be will make a great parent with his pregnant fiancée.

“I feel like Rob has so many traits like my dad, so I think he’s going to be great with the baby,” she said. “I’m sure he’s nervous, as any new dad should be.”

As for her budding romance with Tristan Thompson, who plays for the Cleveland Cavaliers, Kardashian shared that she’s making things work traveling to see her beau as much as possible.

“I’m there very often,” she admitted. “I actually really like it. I like just having my routine and being a little more under the radar.”