Cher, who left WMA about two weeks ago, signed for representation with ICM Monday. The actress has now made the full circle among the Big Three talent agencies. Since 1995, she has moved from CAA to WMA to ICM.Cher, who won an Oscar in 1987 for “Moonstruck,” last starred in “Faithful” for Savoy Pictures. She also directed part 3 of HBO’s “If These Walls Could Talk,” in which she also starred. Cher won critical acclaim for such roles as the 1983 feature “Silkwood” and the 1985 film “Mask.” ICM will rep her in all areas. Now handling her career will be ICM’s Toni Howard and Risa Shapiro in film and Nancy Josephson in TV.