diff.text: Chibiusa is formally named {{nihongo|'''Usagi Small Lady Serenity'''|うさぎSLセレニティ|}}, but in the 20th century she goes by the name '''Usagi TsukinoChibiUsa'''. She is given her nickname by [[Mamoru Chiba]] in the manga and Usagi in the anime<ref>Episode 61</ref> in order to differentiate from the older [[Usagi Tsukino]], Sailor Moon. The nickname is a combination of ''[[wikipedia:chibi|chibi]]'' (meaning [[wikipedia:runt|runt]], [[wikipedia:dwarf|dwarf]], [[wikipedia:shrimp|shrimp]]) and her [[wikipedia:given name|given name]], Usagi. In her own time period, she is always called Small Lady. In the English-language adaptations, where Usagi had been changed to Serena, the diminutive "Rini" was used for Chibiusa's name.