Sister of popular singer and YouTuber Jacob Whitesides. She has amassed over 70,000 followers on Instagram.
She was only about 8 years old when Jacob started getting into the music business.
Thanks to her brother, the hashtag #happybirthdaysierra was trending on Twitter.
She is from Knoxville, Tennessee. Aside from Jacob she has another brother named Caleb. Her mother's name is Becky.
Through Jacob, she has met internet sensation Hayes Grier.