PARTY TIME / Watashi no Tamago (PARTY TIME/わたしのたまご; PARTY TIME / My Egg) is Guardians 4 and Shugo Chara Egg!'s 3rd single. It was released on November 18, 2009 in two editions: regular and limited. The single V was released on December 2, 2009.
"PARTY TIME" was used as opening theme song of Shugo Chara! Party!, while "Watashi no Tamago", the first song by Shugo Chara Egg! and the first song by the second generation, was the opening theme song for Shugo Chara!!! Dokki Doki.
The single peaked at #14 on the Oricon weekly charts and sold 8,722 copies. The single V peaked at #21 and sold 1,726 copies.