Babysitter Delaney Wilson (right) went viral after her boss, Nicki Maher (left) posted a video of Wilson singing the Disney song "Part of Your World" on her TikTok page. (Courtesy of Nicki Maher) This babysitter is a real-life Disney princess.Nicki Maher, 43, from Somerset, Massachusetts, secretly filmed her babysitter, Delaney Wilson, singing a song from the Disney movie "The Little Mermaid," and the clip has gone viral since it was posted last month.The video – viewed more than 11.8 million times – begins with Maher whispering to the camera: "This is our babysitter." In the background, 18-year-old Wilson can be heard singing the song, "Part of Your World."The clip then cuts to Wilson singing while playing with Barbie dolls with Maher’s.