RiRi gifts younger bro 100k-pound sports car for 16th b'day

Rihanna reportedly spent 100,000 pounds on a sports car for her younger brother Rajad's 16th birthday.

The 25-year old singer surprised her brother with a flashy black Mercedes, which he will have to drive under his mother's supervision for the next few months, TMZ.com reported.

Rihanna recently spent six-figure sums on yachts and private jets which she hardly uses.