A moldable collar stay device for a shirt turnover collar comprising a collar stay body and dual collar stay inserts. The shape and the length of the present device may be adjusted by fasteners which facilitate changes to the angle of the collar stay inserts and the length of the collar stay body. The device also may be shaped to accentuate the shape of a user's face. Each collar stay insert may be placed inside collar stay pockets at opposite corners of the shirt collar while the stay body lies along the exterior bounds shirt collar. The shirt wearer may adjust the device around the periphery of the collar to the desired position. Once positioned, the device will remain concealed with the collar and collar stay pockets while maintaining the ability to alter the collar shape, the collar stay length and the angle of the collar stay inserts.