kenzie opens up to ET about a possible reality TV return, her boyfriend, Cole Sage, and her new album, 'biting my tongue,' out now ... I think the kids can't face me,' the 'Dance Moms' alum ...

a now-defunct social media platform mostly used for lip-syncing and dancing. Sioux began posting lip-sync Musical.ly videos when she was 15, often filming with other cast members from "Dance Moms ...