It's double the joy for Colleen Ballinger! The year-old YouTube star, best known for her persona as Miranda Sings, is expecting a baby boy and girl, she announced on Wednesday. Ballinger delivered the news in a minute video shared to her YouTube Channel , which showed herself and husband Erik Stocklin —with whom she already shares 2-year-old son Flynn Timothy — visiting a clinic for an ultrasound. According to Ballinger, she had a "pretty good feeling" going in that one of her twins on the way is a boy. However, the other twin "continues to be a mystery" for the couple, Ballinger said in the video.