Drew Sidora, KeKe Palmer and Lil Mama as TLC. Photo courtesy VH1,

TLC, the best-selling female group in music history is returning to the spotlight with a new album, and a VH1 biopic that tells the story of the group’s illustrious career.

On Monday, October 21st, VH1 will premiere its scripted original movie CrazySexyCool: The TLC Story, which chronicles TLC’s humble beginnings in Atlanta and unprecedented rise to fame in the 90s.

The movie stars KeKe Palmer (Akeela & The Bee) as Chilli, Drew Sidora (Step Up) as T-Boz, and Lil Mama (America’s Best Dance Crew) as Left Eye, who died in a car crash in 2002.

Yesterday, original TLC members Tionne “T-Boz” Watkins and Rozonda “Chilli” Thomas announced the release date of October 15 for their greatest hits album after re-signing with L.A. Reid’s Laface via Epic Records.

The greatest hits collection will include the group’s biggest hits like “Waterfalls” and “No Scrubs,”  along with four new songs, some written by Ne-Yo and Lady Gaga.

Watch Rochelle Aytes talk about playing Pebbles in the TLC biopic here

T-Boz and Chilli also announced that Lil Mama will join TLC for their reunion performance at the Mixtape Festival in Hershey Park, Pennsylvania tomorrow. Lil Mama will also be featured on several new tracks on TLC’s new album.

“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,” says Chilli. “

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,” Adds T-Boz.

“Lil Mama’s authentic style, although very different from Lisa’s, got our creative juices flowing. 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.”

Follow Chris Witherspoon on Twitter at @WitherspoonC