After their last Shinjin Kouen concert in November, Hello! Pro Kenshuusei underwent a major change, in which it dramatically slimmed down its membership by graduating more than half of its members. Sengoku Minami was among the first to announce her training completion from Hello! Pro Kenshuusei, through Hello! Project fan club website in December.
Following Sengoku's announcement, Mori Saki, and then Furukawa Konatsu, also announced their training completion in January. On March 3rd, a new project was announced for 5 of the H!P Kenshuusei who are Sato Ayano, Arai Manami, Sekine Azusa, Furukawa Konatsu, and Mori Saki.
In March, it was revealed that a new TV show featuring Up Front Girls (Kari) with Sengoku, Furukawa, Mori, Sato Ayano, Sekine Azusa, and Arai Manami would be aired on Sky Perfect TV channel, entitled Up Front Girls. This was the first mention of the group name. Not long after, Sato, Sekine and Arai announced their training completion. Various Internet social media also opened for Up Front Girls, such as Ameba blogs, a Ustream channel, and a staff Twitter account.
In early May, Up Front Girls held a series of shows for a fan club event. In the last show of the event, Saho Akari, who had already completed her training at Hello! Pro Egg in April, made a surprise appearance, and announced herself as a new member of Up Front Girls. The show was broadcast live through Nico Nico Douga.
In early June, each member was finally assigned an image color. This procedure was shown live on their weekly Ustream show, where each member actually picked their own image color. The order of this process was determined by two games played before. The result was Sengoku – red, Furukawa – pink, Mori – green, Sato – purple, Saho – yellow, Sekine – orange, and Arai – blue.
In late June, 2011, at their weekly Ustream show, to the members' surprise, the management decided to change the group name to "Up Up Girls (Kari)".
A few days later, it was revealed that the group has been chosen as one of the regular performers at a new stage at Akihabara: MAP Theater, a joint collaboration between PigooHD and Sofmap Akihabara. In September 2011 the officials at the MAP Theater ordered all performances to be stopped after a government inspection found the theater to be unsafe. While the theater was being fixed performances were temporarily moved to a new venue, Hatsudai The DOORS. Eventually the MAP Theater was officially closed, and performances were then continued at various venues.
In late 2011 the group collaborated with the South Korean duo TENSI LOVE, by acting as backup dancers for their performances. The group also performed covers of two of the groups songs at events, "Shine" and "Cake House". Soon after this at another event, the instrumental of a new song was revealed to the members; it was to be their first original song.
It has been decided that their next project will be to debut as Korean artists.
In January 2012 the group performed a tentative version of their still-untitled original song over Ustream. The next month they performed the song yet again and it's title was announced to be "Going my ↑".
Up Up Girls were invited to perform as the opening act at IDOL NATION, on August 11.
Up Up Girls and THE Possible will perform together at Shinjuku Blaze. The event is set for October 7.
In a "Road to Korea" video released in August 2012 the producer of the group announced that Furukawa Konatsu would now be the leader of the kpop dance cover group UFZS.
Around late December, it was announced that the Up Up Girls were releasing their first album.