Bravo has picked up a fourth season of the Emmy-winning “Kathy Griffin: My Life on the D-List,” which will return to the NBC-owned cabler later this year. All of Griffin’s posse is set to return, including her assistant Jessica, her assistant’s assistant Tiffany, her “manager” Tom, and her mother Maggie. This season, Griffin is expected to ask her team to wear uniforms out of respect for her company.