Rugrats

Princess Angelica (3x27)

Air date: Dec 26, 1993

After intensive testing by the Rugrats, it is proven that Angelica is the princess, and contemplates leaving her "fake" parents (Drew & Charlotte, who makes her clean her room once a month) for her "real", royal ones (actually, Sal Fusco, "Home Office King" (555-KING), who charges $100 for a house call).