Brooke Mueller is "terrified" that she will lose her only source of income -- $55,000-a-month from Charlie Sheen -- after  a Los Angeles court  stripped her of custody of their twins boys, Breaking Celebrity News has learned.

"One of the reasons she had her lawyer go to court on Friday to ask the judge to strip Denise Richards of temporary guardianship of Bob and Max -- and have them placed with her brother -- is because she is afraid that Charlie is going to cut off child support," a source close to the situation revealed.