Bookmakers openly admit that they, in fact, do not really care much what will be a bet, whether it will be horse racing betting or primaries. So, the main factor is the interest of potential customers. Therefore, it is incorrect to assume that the only thing that offers bookmakers - it is a sport' bets. Yes, usually, various types of sports dominate on such websites. But almost certainly in the general menu, there is a place for show business.
It's simple, people always were interested in celebrity life. And now, when the television and the Internet have reached crazy development when you can find any show, watch the presentation of any award, and so on, many are beginning to feel that they are well aware of the world of stars. It naturally, that “bet on a celebrity” became popular as well in the live online betting.
Usually, it means guessing the victory in a certain field of well-known (and even not too much) person - artist, actor, etc. Typically, these bets are made for the prestigious prize like "Oscar" or "Grammy" or victory in the competition, for example, Eurovision. The main rule is the bigger the audience, the more popular event, the easier it is to find a bet on the star. And not just on a star – there are different variants of TV shows like "Dancing with the Stars" and "Voice".
There is also a more serious sphere. For example, bookmakers traditionally exhibited odds on applicants for the nearest Nobel Prize. There is an opposite example, when there is something scandalous happens, such as will they "divorce or not". You can even choose something extravagant, such as what joke will make the host of the award or what he will wear. As it was already mentioned, some bookmakers still lead by the factor of demand interest.
All you have to do is make your bet on your favorite actor and enjoy the upcoming event.