Katy Perry's grandma, Ann Pearl Hudson, has passed away. The 35-year-old singer paid tribute to the late loved one via Instagram. "I don't know when a soul enters a new vehicle, but if there is an afterlife where there's a waiting room of the coming and going, my mind wonders if the soul that is waiting to come into my world is getting a kiss on the forehead from my sweet Grandma that departed this earth yesterday. My heart hopes so," the Firework star wrote on the social network. As the post went on, Perry also listed a few of the traits she inherited from her grandma. The tribute included a number of photos and videos. There was also a video of Hudson trying to blow out her birthday candle and a photo of her meeting former president Barack Obama. At the end of the tribute, there was a video of Perry sharing her pregnancy announcement with her grandmother. Hudson passed away at the age of 99.