McAllister is a native of Houma, Louisiana. She is currently a junior at Vandebilt Catholic High School located in Houma, Louisiana. Her goal is to continue modeling while working towards a pre-med degree at Louisiana State University before pursuing a career in dermatology.
Growing up a dancer, McAllister found the transition to modeling and pageants natural. She currently works as a model for The Forbes Agency located in Baton Rouge, Louisiana.
McAllister started her pageant journey when she entered the 2018 Miss Louisiana USA and Teen USA pageant where she represented Bayou State. On her first try at the title, she cracked the Top 5 and was ultimately named third runner-up to Miss Louisiana Teen USA 2018, Lindsey Conque.
Encouraged by her strong performance, McAllister returned to the Miss Louisiana Teen USA stage for a second time. She registered for the 2019 Miss Louisiana USA and Teen USA pageant where she again represented Bayou State. On October 6, 2018, McAllister was crowned Miss Louisiana Teen USA 2019 at the Jefferson Performing Arts Center located in Metairie, Louisiana.
McAllister will go on to compete for the title of Miss Teen USA 2019.