AceShowbiz -

Kendall Jenner got a brand-new Rolls-Royce on her 21st birthday last week. The luxury car was widely believed to be a gift from her mom Kris Jenner, but Khloe Kardashian revealed in an interview on "Jimmy Kimmel Live!" on the next day that the vehicle was given to the model by a stranger waiting outside of Delilah where her birthday bash took place.

Now, the guy's identity has been revealed. Us Weekly reports that he's a millionaire named Saygin Yalcin who's in his 30s and is best known as a founder of Middle East's first and largest car buying service SellAnyCar.com and online private shopping club Sukar.com. He also serves as an Advisory Board Member and Academic Lecturer of Entrepreneurship at the Canadian University of Dubai.

It looked like Saygin had personally known Kendall and Kris before he showed up at the model's party. An insider told Us Weekly that he worked with the momager to surprise her daughter with the car.

"Kris played an integral role in orchestrating the gift of the Rolls-Royce from her close family friend, Saygin, to Kendall," said the source. "She was so excited and happy to be able to make it happen and loved that she was the one who could present Kendall's with the keys!"

In a YouTube video from Kendall's birthday party, the Victoria's Secret Angel could be seen hugging him upon seeing him and shrieking, "Hi! I was wondering why you're here." Meanwhile, her sisters Khloe and Kourtney Kardashian looked confused.

Kendall was super excited about the car, but completely forgot about it when she woke up the next morning. In her chat with Jimmy Kimmel late last week, Khloe said that her younger sister got so drunk at her birthday party.

"This morning I was like, 'That's so cool you got this car, how'd you get it home last night?' She was like, 'Oh my God I forgot I got a car last night!' That's how drunk she was! She got so drunk on her 21st birthday," the 32-year-old beauty shared. "I'm sure my mom took it."