Which famous rapper was arrested and hospitalized after appearing in LA in unusual attire?

The correct answer is that Lil Nas X was the rapper who was arrested and hospitalized after appearing in unusual attire in LA. This incident attracted significant media attention, largely due to Lil Nas X's reputation for pushing boundaries with his fashion choices and public persona. His unique style often challenges conventional norms, making him a polarizing yet influential figure in the music industry. The unusual attire he wore on this occasion contributed to the sensational nature of the story, leading to widespread coverage and public interest.

In contrast, while Drake, Kanye West, and Post Malone are also well-known figures, they do not have a similar recent incident that matches the description provided in the question. Therefore, focusing on Lil Nas X's specific actions, public perception, and how they tie into his artistic identity helps to clarify why he is the correct answer in this context.