FIESTAR (Hangul: 피에스타) is a five-member South Korean girl group, originally 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 trained for an average of four years; two years since the formation of the group. They released a song and music video with their label-mate, IU, titled "달빛바다 (Sea of Moonlight)" and later released a pre-debut single titled "Wicked" featuring Tiger JK. They released their first single "Vista" on August 31, 2012.

In May 2018, it was announced that Fiestar officially disbanded following their contract expiration.

On August 2024, Fiestar announced that they would reunite to celebrate their 12th anniversary debut with the release of a remake of their 2015 single "You're Pitiful", their first independent release. Cao Lu cited that the single's copyright was bought by her. Their remake single was officially released on August 31, with a new style which combined "UK Garage" and "Rage Pop" genres. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.