Sir Elton John is planning a massive four-day party in Los Angeles to celebrate his husband David Furnish's 50th birthday.

The music superstar has reportedly spent six months planning the bash, which will kick off next Wednesday at the couple's home in Beverly Hills.

Guests will be flown in from all over the world and will be put up at the Four Seasons Hotel in Beverly Hills, with party-goers on the list said to include Victoria and David Beckham, and model/actress Elizabeth Hurley, according to Britain's Mail on Sunday.

On Thursday, the day of Furnish's birthday, a dinner will be held for 200 people at the Belasco Theatre in downtown LA, while on Friday the celebrations will continue at the Greystone Manor nightclub, where Cher will perform.

The festivities will conclude with a trip to Las Vegas on Saturday, with guests being driven to Sin City to see Elton perform his Million Dollar Piano show at Caesars Palace.

Lady Gaga, Cher, Scissor Sisters and the Cirque du Soleil troupe are said to be among the artists booked to perform at the various events over the four-day stretch.

After the celebrations Sir Elton will head to Australia for a national tour that begins in Perth on November 12.