Tickets are going on sale for a major celebration to mark the Queen's 90th birthday.

Organisers expect the 25-thousand places to sell out quickly when they come up for grabs next week.

The 90th birthday bash will take the form of a theatrical spectacle, featuring 900 horses and more than 15 hundred performers.

It will run for four nights in May at Home Park Windsor Castle.

The Queen will go to the last performance on May 15th.

Tickets will cost from $130 dollars to over 200 dollars.

The Queen's actual birthday is April 21st.