Gemini

Gemini is one of the 12 zodiac constellations  and  was one of the original 48 constellations listed by 2nd century A.D. astronomer Ptolemy. Its name is the Latin word for "twins" and is associated with Castor and Pollux from Greek mythology. Its symbol is ♊. Today, Gemini remains one of the 88 modern constellations.

2wingS (Ichigo Hoshimiya and Seira Otoshiro)
Individually, this is not Ichigo and Seira's respective zodiacs, but as the unit 2wingS, they are represented by the constellation.

Hinaki Shinjō
Hinaki is the first and only main character to be born under Gemini, but lacks any Gemini dresses due to being introduced in season three, where the Constellation System is no longer in use.

Coords of Gemini

 * Angely Gemini Coord
 * Sweet Twins Coord
 * Swing Gemini Coord
 * Bitter Twins Coord

Anime Screenshots

 * Episode 98 - Twin Dresses
 * Swing Gemini Coord, Angely Gemini Coord