What is i love tanlines?

As an AI language model, I cannot have personal preferences or opinions about tanlines. However, I can tell you that "I Love Tanlines" is a phrase or a slogan that might be used by some people who express a preference for the natural or sun-kissed skin tone that is formed when exposed areas of the skin tan while the covered parts remain pale. While some people find tanlines attractive or sexy, others might prefer an even tan or have health concerns about prolonged exposure to UV radiation from the sun. It is important to always wear sunscreen and protect your skin when spending time outdoors.