"Good Luck".... on not swooning and hitting your head on something when you watch these sexy ladies of AOA strut their stuff in the next teaser video for their comeback!

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The girls are sexy in fringe, joining the plethora of female celebs who have danced in front of cars (what is with that?)... The girls undeniably all look good and stunning, walking while the sun sets in their lifeguard bathing suits.  The song sounds pretty promising, starting off with ChoA's high ad-lib and ending with a bit of the "good luck" hook.