Kate Hudson decided to throw the ultimate celebrity filled Halloween costume party. Along with boyfriend turned fiancé Matthew Bellamy, the A-list couple opened their Los Angeles Pacific Palisades home to all their friends for a fun "Game of Thrones" themed Halloween party. 

According to Us Weekly, on Saturday, October 26th Hudson, 34, Bellamy, 35, and their entire family dressed up as characters from HBO's hot series "Game of Thrones."

An insider revealed that the actress wore a furry crop top with matching fur boots, while her fiancé dressed up as the character Jon Snow played by Kit Harington in the show.

Adding further to the theme of their party, Kate Hudson and Matthew Bellamy built an enclosed winter world from the "Game of Thrones."

The couple also had a Patron ice bar which the magazine alleges was inspired by Jon Snow's journey in the tundra-like northern realm beyond "the wall."

Some familiar Hollywood faces at the bash included Kate Hudson's mother, Goldie Hawn and her longtime boyfriend Kurt Russell.

The 67-year-old actress and the 62-year-old actor opted to go with a folktale theme and looked like they were trying to pull off Hansel and Gretel.

Hawn wore a blonde wig with pigtail braids, a pink bonnet and dirndl, while Russell rocked lederhosen, according to Us Weekly.

Bradley Cooper also made it to the party and pulled up the bash riding his motorcycle and wearing a gorilla suit while his model girlfriend Suki Waterhouse, who was sitting on the back holding on tightly to her boyfriend.

New parents Fergie and husband Josh Duhamel decided to wear a couple's costume which involved The Black Eyed Peas singer showing an ample amount of cleavage in her sexy Elvira outfit.

Meanwhile, Duhamel dressed up as Riff Raff  from "The Rocky Horror Picture Show."

To check out photos from Kate Hudson and Matthew Bellamy's "Game of Thrones" themed Halloween party click HERE.