Rapper Wiz Khalifa is mourning the death of his sister, who has passed away at the age of 32.

Dorien 'Lala' Thomaz, who was allegedly transgender, died on Monday (20Feb17). A cause of death has not been announced.

Thomaz's death occurred a day after Black and Yellow hitmaker Wiz hosted a party with ex-wife Amber Rose to celebrate their son Sebastian's fourth birthday.

The 29-year-old, real name Cameron Thomaz, has since addressed the news on Twitter, thanking fans for their messages of support.

He writes, "The loss of my sibling has been the hardest thing Ive (sic) had to deal with but wiith (sic) your prayers and well wishes my family will get though (through) this".