Demi Lovato arrives at Sprint Center for another round of X Factor auditions on Friday (June 8) in Kansas City, Mo.
The 19-year-old entertainer, along with fellow judges L.A. Reid and Britney Spears, joined Louis Walsh who stepped in for his sick pal, Simon Cowell.
“Yeah, substitute teacher!!” Demi wrote on her Twitter page about Louis, a judge on UK’s X Factor.
“Hey guys, today is my little sister’s graduation, can you guys help me trend #happygraduationmaddie for her birthday?? :)” she said in another tweet.
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