The pirates fancy dress costumes that we or our children wear today to parties, originated in history from the time of Queen Victoria in England.
As you might expect, balls of the time were very lavish and only those who could affford the attire would be invited.
Into the 20th Century and the advent of cheap imports from China. Now we had a source which could provide us with the pirate fancy dress costumes we could indulge in for our celebrations, whether that be Halloween or birthday parties.

This, added to the 20th century development of film and tv characters, gave suppliers and makers a fabulous range of styles and themes to follow.
With the development of Walt Disney characters,licensed merchanding began.
For example you would now have games for christmas based on super heros for children, be they batman, pirates or princess themes.

Now these characters were developed from games, comic books and toys, into costumes.
You would have pretty little witch costumes for halloween parties and a pirate costume for those wanting to be Captain Jack Sparrow alongside Will Hunting in Pirates of the Caribbean.

Now when a new childrens' film is released, there is a comprehensive licensing agreement with the copryright owners such as Disney, to provide the market with fancy dress pirate costumes and the popular Jack Sparrow pirate costume. Similarly with Marvel comics we have batman and spiderman costumes, more popular with boys and used in fancy dress for birthday parties.

News flash : Rumor has it that the makers of the Pirates of the Caribbean movie are considering a new movie and plan on introducing
Jack Sparrow's brother to be played by Russell Brand. Brand recently resigned from the BBC over a controversial radio boradcast
The interesting point about Brand is that his mannerisms are very simliar to Johns Depp's portrayal PLUS they speak in the same Cockney accent
We await developments