As an infant, Brown began to sing the alphabet immediately after learning it and began performing at the age of 3 upon receiving her first karaoke machine. As a child, Brown began to regularly perform in school plays and beauty pageants while taking voice lessons and piano study. She was also involved with 'Janoskian's member Luke Brooks.
In 2011, Brown's mother discovered Kidz Bop, a website for kids to upload and share videos of themselves performing. She uploaded a video of Brown performing an original number on the piano, with Brown selected as a finalist. After performing Adele's"Someone Like You" to earn her a place in the Top 4, Brown won the 2011 KIDZ Star USA Grand Prize out of 45,000 submissions, the largest national talent competition for kids age 15 and under.
At a school assembly, Brown was told that she won the national talent search by "American Idol" winner Kris Allen. The prize included a RCA Records recording contract and starring role in the Kidz Bop 21 music video and commercial. Allen said after seeing her live, "She went from 'She's good' to 'She is no doubt gonna win this thing."
In 2012, Brown was named cover girl for Miss Moxie's Holiday 2012 issue. The site praised "Hey Chica" for promoting "clear message of self empowerment and encourages young women to feel beautiful in their own skin."
In 2016, Brown was cast in the series regular role as Zoe Vaughn on the second season of MTV's Scream.