The five-day 2011 Royal Ascot has been a unique spectacle of horse racing, high-end fashion and of course flamboyant hats and headgears.

An important part of the British social calendar, the event is as much about racing as it is about style, elegance and networking. Fashionastas adorning some of the most attractive headgears throng the event ground and it is often believed that, the more outrageous the hats, the better.

Founded in 1711 by Queen Anne, the event has emerged to be one of the most famous race meetings throughout the years. The event starts with the arrival of the Queen along with other members of the Royal Family in a royal procession.

Check out the top 10 ridiculous hats of this season's Royal Ascot celebrations below:

Royal Ascot 2011 A spectacle of glamour, style and the infamous Mad Hatters.
Racegoers sit in the stands before The St James's Palace Stakes on the first day of racing at Royal Ascot in southern England June 14, 2011. Reuters.
Top 10 most ridiculous hats at Royal Ascot 2011.
A woman poses in her hat on Ladies Day, the third day of racing at Royal Ascot in southern England June 16, 2011 Reuters.
Top 10 most ridiculous hats at Royal Ascot 2011.
A woman poses in her hat on Ladies Day, the third day of racing at Royal Ascot in southern England June 16, 2011 Reuters.
Top 10 most ridiculous hats at Royal Ascot 2011.
A woman poses in her hat on Ladies Day, the third day of racing at Royal Ascot in southern England June 16, 2011 Reuters.
Top 10 most ridiculous hats at Royal Ascot 2011.
A woman poses in her hat on Ladies Day, the third day of racing at Royal Ascot in southern England June 16, 2011 Reuters.
Top 10 most ridiculous hats at Royal Ascot 2011.
Racegoers arrive on the second day of the Royal Ascot race meeting in southern England June 15, 2011. Reuters.
Top 10 most ridiculous hats at Royal Ascot 2011.
A racegoer holds onto her hat as she arrives for the first day of racing at Royal Ascot in southern England June 14, 201 Reuters.