The Transformation Brooch is the first magical item Usagi Tsukino uses to become Sailor Moon. Given to her by Luna, it triggers her change with the phrase Moon Prism Power, Make Up, and she wears it on the bow of her school uniform.
The Transformation Brooch is the earliest magical device Usagi Tsukino relied on to change into her basic Sailor Moon form. Its activating call is Moon Prism Power, Make Up. In the Crystal design it is a rounded golden brooch topped with a crescent moon, with a gold star at its heart and four little circles set one to each quarter, each standing for one of the Inner Guardians who fight at her side: red for Sailor Mars, blue for Sailor Mercury, green for Sailor Jupiter, and orange for Sailor Venus.
Luna delivered the brooch to Usagi in the opening episode of the anime and in the first act of the manga and Crystal. To convince Usagi that a Guardian's destiny truly awaited her, Luna coaxed her into transforming into Sailor Moon, bribing her in the anime and tricking her in the manga and Crystal. Once she had it, Usagi took to wearing the brooch at the center of the bow on the front of her school uniform whenever she was in civilian form. The item did not last the whole run: it broke during the anime's fifty-first episode and in Act 14 of the manga and Crystal, after which she gained the Crystal Star.

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Sailor Moon's first magical brooch is called the Transformation Brooch. Usagi Tsukino uses it to change into her basic Sailor Moon form and wears it on the bow of her school uniform in civilian life.
Usagi Tsukino triggers her change into Sailor Moon by calling out Moon Prism Power, Make Up while holding the Transformation Brooch.
Luna delivered the Transformation Brooch to Usagi Tsukino in the opening episode of the anime and the first act of the manga and Crystal, coaxing her into transforming for the first time.
The Transformation Brooch broke during the anime's fifty-first episode and in Act 14 of the manga and Crystal, after which Usagi gained the Crystal Star to replace it.
In the Crystal design the Transformation Brooch is a rounded golden brooch topped with a crescent moon, with a gold star at its heart and four small circles representing the Inner Guardians in their colors, red for Mars, blue for Mercury, green for Jupiter, and orange for Venus.
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