Tia Kemp lashed out at the hip-hop star on social media on Thursday (10Sep15), when she shared a photo of their nine-year-old boy William standing next to the BMW B7, which she alleges was a gift from father to son.

She captioned the snap, "Rick Ross takes the car from his Son Again!!".

Kemp then uploaded a series of pictures of the Hustlin' hitmaker with famous friends like Sean 'Diddy' Combs and T.I. and issued desperate pleas to each of the stars, begging them to convince Ross to hand back the keys to the vehicle.

However, according to TMZ.com, the rapper did nothing wrong legally as he paid for the car and still has it in his name.

Reports suggest Ross may have taken back the car as punishment for Kemp after she repeatedly slammed his new girlfriend, Lira Mercer, online.

It's the latest fall out between Ross and Kemp after she filed legal papers in July (15) seeking an increase in child support, insisting the 39 year old can afford to pay her much more than the $1,951 (£1,300)-per-month she currently receives.