Kylie Jenner crashes her $125K Mercedes 18 days after getting her license

Kourtney Kardashian warned us.

"Look out world! @kyliejenner is a licensed driver!" she wrote of her half-sister in an August 12 tweet.

It only took 18 days, but Kylie Jenner -- who celebrated her 16th birthday earlier this month -- started a three-car collision in Calabasas, Calif., on Wednesday.

According to TMZ, Jenner's Mercedes-Benz slammed into a Toyota, which then slammed into a Suburu. Jenner apparently got out of her car to apologize and exchange information with the other drivers. The Toyota sustained the most serious damage.

Jenner received the $125,000 G-Class car when she was still 15 and not yet legally allowed to drive. Her older sister, Kendall, previously received a $90,000 Range Rover as a 16th birthday present.

I was feelin myself pic.twitter.com/grlG8khI05

— Kylie Jenner (@KylieJenner) August 16, 2013