Social star best known for her lip sync videos on the app TikTok, where she is known under the username sigswapped. Her account has upwards of 4.8 million fans.
One of her first featured videos on the app musical.ly, which later became TikTok, was captioned "ha my smiles ugly but #SmileChallenge."
She became popular on Instagram with more than 750,000 followers.
Her full name is Signa Mae O'Keefe. She has a younger sister named Sophia. She lost her older brother Beau at a young age. She began dating Braydon Wald in 2017; but they would later break up in early 2018.
She posted a musical.ly video set to Skylar Grey's "Coming Home" in a tribute to her late brother that was featured by the app.