After Demi Lovato’s topless pictures leaked just a few weeks ago, she is showing off her lustworthy assets today. The 21-year-old singer took to Twitter earlier today to share a sultry selfie in a thong bikini, baring her buns for the world to see and adding a little extra heat to what appears to be a gorgeous Brazilian day. She captioned the photo, “When in Brazil #NEONLIGHTSTOURSA.”