[BlindGossip] There was a lot of fuss made over many of the celebrities at the service for Whitney Houston. However, there were two big celebs in attendance who went relatively unnoticed. One is a pop diva and the other is her former sister-in-law, who is also a singer. Both have famous last names. The latter flew in just for the service and the two sat together towards the back of the church. They didn’t sing any songs or make any speeches or demand any kind of attention. They simply paid their respects and quietly exited once the service was over.