Sweeten was born on June 27, 1991, in Brownwood, Brown County, Texas, the eldest of four children born to Timothy Lynn Tim Sweeten and Elizabeth Anne Gini (nee Millsap). Her younger siblings include her sister Maysa Sweeten and twin brothers, Sawyer Sweeten and Sullivan Sweeten, and, by her mother's remarriage to Jerry Gini, she has four half-sisters, Elliette Gini, Emma Gini, Guiliana Gini, and Jaymeson Gini