Paris Hilton made That's Hot famous during The Simple Life, the reality series she starred in with Nicole Richie in the early 2000s, where she used the phrase to describe anything she liked, from clothes to food to places. The line quickly became her trademark and followed her into interviews, merchandise and pop culture references. As short clips spread online, it became a shorthand reaction for approval and glamour, especially in memes and short-form video. Its simple wording and instantly recognisable voice keep it useful decades later.