Dance Moms star Christi Lukasiak...on TikTok. Here's the somewhat exhausting deal: last week, Christi answered a fan question about whether she's still in touch with Dance Moms coach and choreographer Gianna Martello, and she responded "No, Gianna's not nice."This prompted JoJo to hop on TikTok and call Christi's statement the "most disgusting and ignorant thing" she's ever heard, saying "First of all, Gia is one of the sweetest people in the whole world.