 Colas represented Corse and was crowned as 1st Runner-up at Miss France 2018 that was held on 16 December 2017 and she was appointed as Miss Universe France 2018 at M.A.CH 36 in Châteauroux, Centre-Val de Loire.The real winner of the 2018 edition of Miss France, Maëva Coucke chose to compete at Miss World 2018 so the 1st runner-up, Eva Colas, was appointed as Miss Universe France.Colas represented France at Miss Universe 2018 pageant in Bangkok, Thailand where she did not place in the Top 20.