Multiplatinum R&B icons TLC are preparing to mount a major comeback. The group -- Rozonda “Chilli” Thomas and Tionne “T-Boz” Watkins -- will begin their return when they release a new album this fall. The teaser trailer for their upcoming VH1 biopic has been unveiled. Lastly, they have confirmed some exciting news regarding an upcoming live performance.

On the music front, the group has signed a new deal with Epic Records. The label boss, L.A. Reid, is responsible for originally signing the group to his LaFace Records in 1991. TLC’s as-yet-untitled new record will feature the group’s greatest hits, in addition to four new songs composed by the likes of Lady Gaga and Ne-Yo. According to the press release, some of the new material will be produced Dallas Austin, who co-produced their albums “CrazySexyCool” and “FanMail.” The new album will be released on October 15.

The teaser trailer for their VH1 film, “CrazySexyCool: The TLC Story,” was released today. The two minute clip features actresses KeKe Palmer as Chilli, Drew Sidora as T-Boz, and Lil Mama as Left Eye. Judging from the trailer, the trio delivers spot-on renditions of TLC’s live performances and music videos. The movie is directed by Charles Stone III ("Drumline") and written by Kate Lanier ("What's Love Got To Do With It"). The film will air on October 22. Watch the clip below.

In even more exciting news, Chilli and T-Boz announced that Lil Mama will perform as a member of TLC when the group hits the stage at the Mixtape Festival at Hersheypark Stadium in Hershey Park, Pa on Saturday, July 27. According to Consequence of Sound, it’s their first full performance in four years, save for a 2009 show in Japan.

"For ten years we have been mourning the death of our sister Lisa, and although we have discussed the option of bringing in someone to perform with us, it never felt right at the time," Chilli said. "Watching Lil Mama on the set of our movie CrazySexyCool: The TLC Story reminded us of Lisa's spirit, and, for the first time since her passing, we felt everything come together in an organic way."

“Lil Mama's authentic style, although very different from Lisa's, got our creative juices flowing,” T-Boz added. “By bringing her in, we will continue to keep TLC's music alive for a new generation of fans. We are thrilled to be writing this new chapter in the TLC story."