Camilla Marie Gjersem was born together with a twin sister, Anne Line, on 6 January 1994 in Hønefoss, Norway.

[3][4] Their mother, Perlina Bangug, is a Filipina from Ilagan, Isabela,[5] and their father, Petter Gjersem, a Norwegian from Raufoss.

Training mainly in Asker, she was coached by Kaja Hanevold until the end of the 2010–11 season and then by Berit Steigendal.

In 2015, Gjersem was a favorite to win her fourth Norwegian national champion, but finished second to her sister Anne Line by a margin of 0.58 points.

[15] CS: Challenger Series; JGP: Junior Grand Prix Media related to Camilla Gjersem at Wikimedia Commons