Fifth Harmony LIVE Sledgehammer

The T.J. Martell's Family Day Los Angeles took place at CBS Studios in order to raise money for cancer, leukemia and AIDS research.

Over 1,000 guests attended the event, along with some of our favorite stars, to raise awareness for the foundation, making this past Sunday the most successful Family Day LA event in six years. The foundation raised $312,000 during the course of the event, and some of the artist took the stage to continue to bring light the to cause.

Fifth Harmony and Lucy Hale got up on stage to put a smile on everyone's faces with their performance of their new hit song.

Check out some of the amazing performances in the videos below, and let us know which artist is your favorite.