Task: Explanation
Input (English): Whale tail is the Y-shaped waistband of a thong or G-string when visible above the waistline of low-rise jeans, shorts, or a skirt that resembles a whale's tail. Intentionally or unintentionally, a whale tail is exposed above the trousers mostly when sitting or bending, or even while standing. The frequency or occasion depends on the style of trousers, the style of underwear, and the way they are worn. Displaying whale tails became popular in the early 2000s, together with the rise of low-rise jeans and thong underwear. The trend, popularized by a number of female celebrities including Christina Aguilera, Victoria Beckham, Mariah Carey, Paris Hilton and Britney Spears, waned within the decade. Question: Which female celebrity who popularized the "Whale Tale" was in a reality TV show called "The Simple Life"? Answer: Paris Hilton
Output (English):  The trend, popularized by a number of female celebrities including Christina Aguilera, Victoria Beckham, Mariah Carey, Paris Hilton and Britney Spears, waned within the decade.