JoJo Siwa will reunite with her Dance Moms co-stars in a new special — four years after the Lifetime show's 2019 finale and 13 years after its 2011 premiere. JoJo Siwa will reunite with her Dance Moms co-stars in a new special — four years after the Lifetime show's 2019 finale and 13 years after its 2011 premiere; pictured in …