JoJo Siwa and Miranda Sings Make a Birthday Cake MESS. 6:54. Load More. JoJo Siwa JoJo Siwa. You already know her from TV, Instagram, Musical.ly or YouTube – spreading positivity and kindness across the globe! Now, slap on a bow and take an exclusive sneak peek into the inspiring world of JoJo Siwa! Catch her very first television special on …