Heart Defensor is a popular YouTube personality best known for her channel, ThatsHeart, where she shares beauty product reviews, hair and makeup tutorials, and nail art. She also hosts a YouTube show called Fashion Remix in partnership with Seventeen Magazine. Heart uploaded her very first video, "Introduction and What's In My Bag Tag," on November 2, 2010, and her channel has since earned over 2.3 million subscribers. Her influence in the beauty community has led to features in Teen Vogue and Los Angeles Magazine.