Social star best known for her lip sync videos on TikTok, where she is known under the username sig. Her account has earned upwards of 5 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. She is known to post beach photos, selfies and pictures with friends to her account.
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. In 2020, she began dating someone named Carter.
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.