Liza Minnelli's aging stepmother is suing her for elder abuse and breach of contract.

Lee Anderson Minnelli claims the singer tried to evict her from her Beverly Hills home by shutting off the power and firing the gardener and pool man. Court papers say: "While Defendant is honeymooning all over the world, having fed 850 of her closest friends a 12-foot cake, Plaintiff is alone in a cold, dark house at age 94." Liza's spokesperson counters that while she sold the house — where Lee lived rent-free for years — she did offer to buy her stepmom a condo, which was refused.