Blac Chyna strips off on TV to make a cast of her boobs and pregnant belly — then twerks in the pool with naked pals

BLAC Chyna stripped off to make a cast of her pregnant belly for an episode of her reality show Rob & Chyna.

The former stripper, 28, lifted up her top so twin pals Karina and Karissa Shannon could lay plaster strips across her boobs and stomach.

As the blonde lookalikes went to work on the cast, Chyna declared: "I've been dying to do this!"

When the cast was finished the trio were joined by Chyna's best pal Paige Addison for a dip in the pool.

The twins got completely naked, while Chyna sported in a tiny white thong bikini.

Chyna then showed off her famous bum as she twerked in the water, with one of the twins reaching out to slap it.

Blac Chyna, whose real name is Angela Renée White, is expecting a little girl with Kim Kardashian's brother Rob Kardashian, 29.

Rob & Chyna follows their relationship as they prepare for the child's birth.

Chyna already has a son, King, with rapper Tyga, who is now dating Kim's younger sister Kylie Jenner.