FIESTAR (피에스타) is a five member South Korean girl group under LOEN Entertainment. Their members are Jei (재이), Linzy (린지), Yezi (예지), Hyemi (혜미), and Cao Lu (차오루). Member Cheska left the group in 2014. The girls have trained for an average of four years; two years since the formation of the group. They released a song & music video with their label-mate, IU, titled "달빛바다 (Sea of Moonlight)" and later released a pre-debut single titled "Wicked" featuring Tiger JK.