This is a list of trivias, statistics and curiosities of the group E-girls.
- For releases where the main song is used as theme song for e-ma CMs, the group change its name to e-girls. So far, 3 E-girls' singles were used for e-ma CMs: "CANDY SMILE" (2013), "Kurukuru" (2013) and "Mr.Snowman" (2014). In 2015, Happiness' "Holiday" was used as the theme song.
- At the date, Flower's Washio Reina is the only member to be vocally featured on all a-side singles of the group.
- At the date, Happiness' SAYAKA, Kaede, Fujii Karen and Flower's Washio Reina and Sato Harumi are the members who appeared on all a-side singles since the group's debut.
- "Gomennasai no Kissing You" is currently:
- Best selling single of the group.
- The first single to hit the #1 on Oricon's daily chart.
- "Follow Me" is currently:
- Best selling digital single of the group.
- The most recognizable E-girls song among Japanese fans.
- "One Two Three" is currently the lowest selling single of the group.
- "Gomennasai no Kissing You" and "Diamond Only" are the singles with most members on its line-up (29 members).
- "CANDY SMILE" and "Mr.Snowman" are currently the singles with the least members on the line-up (12 members).
- The most used line-up of vocalists is the one with Shizuka, Ami, Fujii Karen and Washio Reina.
- "One Two Three" was the first single to include a Seifuku Dance on its music video. Currently, "Mr.Snowman" is the last single to include it.
- The group is currently participating on NHK's Kouhaku Uta Gassen, a popular annual new years eve's event. They're participating since 2013.
- Sana, member of the K-Pop girlgroup TWICE, sang the chorus of the song "Follow Me" for her introduction video of the TV show SIXTEEN.