In her freshman year, Collier played for Jefferson City High School in Jefferson City, Missouri, where she averaged 17
9 points and 9
8 rebounds
She was the 2013 and 2015 Gatorade Missouri Player of the Year, one of five finalists for the 2015 Naismith Award as national Player of the Year and Women's Basketball Coaches Association High School All-American
At the end of her UConn career, Collier ranked 3rd in scoring, 4th in rebounds, and 7th in blocks
Collier was selected by the Minnesota Lynx as the 6th overall pick in the 2019 WNBA draft
In the 2020 season while in the WNBA bubble, Collier started a podcast with A'ja Wilson, Tea with A & Phee