10) Star Wars camera - $625,000

Audrey Hepburn's My Fair Lady dress

The record price for Star Wars memorabilia was broken in December 2011, when the original Panavision PSR 35mm camera used during filming of Star Wars: Episode IV - A New Hope achieved $625,000 at a Profiles in History sale in December 2011.

9) Judy Garland ruby slippers - $627,300

The pair of ruby slippers worn by Judy Garland during the first two weeks of filming for the 1939 picture sold for $627,300 in June 2011 at a Profiles in History auction.

They had arrived at the sale with a $120,000-150,000 estimate.

Like the majority of items in the Top 10 film memorabilia sales of 2011, they were acquired by Hollywood actress Debbie Reynolds in 1971 when Twentieth Century-Fox sold a large amount of its old props and costumes. Profiles in History offered selections from the Debbie Reynolds collection for sale in both June and December.

8) Julie Andrews Sound of Music costume - $676,500

The red-brown nubby jumper with ivory raw linen blouse worn by Julie Andrews in 1965 picture the Sound of Music made $676,500 at a Profiles in History auction in June 2011, against an estimate of $40,000-60,000.

7) Chitty Chitty Bang Bang car - $805,000

Judy Garland's costume

The only functioning road-worthy vehicle of the six Chitty Chitty Bang Bangs produced for the 1968 film realised $805,000 in May 2011 at Profiles in History, slightly below its $1m low end estimate.

6) Orson Welles Best Screenplay Oscar - $861,542

The 1942 Best Screenplay Oscar, awarded to Orson Welles for 1941’s Citizen Kane, achieved $861,542 at a Nate D Sanders auction in December 2011.

It is the only Oscar granted to the film and Orson Welles, besides an honorary award he received in 1970.

5) Steve McQueen Le Mans racing overalls - $984,000

The driving overalls sported by Steve McQueen in the 1971 picture Le Mans sold for $984,000 in December 2011 at Profiles in History.

The overalls were originally given away in a 1971 competition run by British newspaper the Observer.

4) Judy Garland Wizard of Oz Dress – $1.1m

In June 2011, the Wizard of Oz dress Judy Garland wore during the initial test shots in pre-production, and for the first two weeks of filming in 1939, sold for $1.1m at a Profiles in History sale.

The dress contains the handwritten label ‘Judy Garland 3955’ and had arrived at the auction with a $60,000-80,000 valuation.

3) Marilyn Monroe Gentlemen Prefer Blondes dress - $1.4m

Monroe's Seven Year Itch dress

The red sequined dress and matching hat worn by Marilyn Monroe in her role of Lorelei Lee in the 1953 film sold for $1.4m at a Profiles in History auction in June 2011.

The costume was worn by Monroe during the scene in which she performs ‘Two Little Girls from Little Rock’ with co-star Jane Russell.

2) Audrey Hepburn My Fair Lady dress - $4.5m

Hepburn’s Ascot dress from the 1964 film made $4.5m in June 2011 at Profiles in History, against a pre-sale estimate of $200,000-$300,000.

It was created for the movie by costume designer Cecil Beaton, winning him an Oscar for best costume design.

1) Marilyn Monroe The Seven Year Itch dress - $5.6m

The dress worn by Marilyn Monroe in the 1955 film sold for $5.6m in June 2011 at Profiles in History. It had come to auction with a $1m-2m estimate.

The dress, fashioned from an ivory coloured rayon-acetate crepe, was designed specifically for the scene in which Monroe stands over a subway grate and says the line: “Oooh, isn’t it delicious?” as the warm breeze makes her dress billow.