Abby Lee Miller is one proud mentor. The 55-year-old dancer teacher took to Instagram on Sunday (January 24) to share a post celebrating former student JoJo Siwa, who recently came out as part of the LGBTQ+ community. “I always knew the world would be a more colorful, positive, sparkly place with a kind, loving, dazzling triple threat like you in it – a shining example for the kids out there to live their BEST lives each and every day,” Abby wrote along with a few throwback photos with the 17-year-old entertainer. “You put your heart on the platter! (If you know you know) Love you kiddo!!!” Abby continued. “Keep making me proud