Rihanna

The provided news articles do not contain any information about Rihanna. Therefore, it is impossible to provide a summary about her based on the given text. The articles discuss unrelated topics: the Los Angeles Fire Department's public relations spending, Pop Mart's share buy-back program, and Beyoncé achieving billionaire status. These events are significant within their respective contexts (public service, the toy market, and the music industry), but they offer no insight into Rihanna's current activities or relevance.