Andy Cohen and Joan Rivers Andy Cohen and Joan Rivers

Whitney Houston was a favorite target of Joan Rivers', but the funnywoman acknowledges that it's inappropriate to mock the singer right now. After Houston died Saturday, E! pulled a Fashion Police episode in which Rivers pokes fun at Houston, and WE had to amend a future episode of Joan & Melissa: Joan Knows Best? as well.

Aretha Franklin, Stevie Wonder to sing at Whitney Houston's funeral