Kim Kardashian's assistant has allegedly crashed her $300,000 car.

The 33-year-old star has been forced to pay out to get the paintwork fixed on her black Rolls-Royce Phantom Series II after her employee accidentally reversed the vehicle into a mailbox over the weekend.

The assistant was reportedly trying to manoeuvre the luxury car out of Kim's driveway at the time of the prang, which has left the vehicle with a large dent and a number of scratches on the rear panel.

However, Kim's assistant isn't being held financially responsible for the damage, which could cost over $20,000 to repair, as the brunette beauty has decided to foot the bill herself, according to TMZ.com.

Meanwhile, it seems Kim had other things on her mind at the time as she was busy setting up her daughter North's first birthday party.

The 'Keeping Up with the Kardashians' star and husband Kanye West, 37, threw a lavish Coachella-inspired bash, Kidchella, on Saturday (21.06.14) to celebrate North's recent milestone.

The newly-weds organised a number of activities - including face painting, hair-braiding, temporary tattoos and fair ground rides - as well as setting up tepees for guests to chill out in.

There were also small stalls, picnic benches, stages and a bouncy castle at the party, which was held at Kim's sister Kourtney's house in Calabasas, California.