to shed the pounds - here are the most notable celebrity slim-downs of 2011!

Jonah Hill: The Sitter and 21 Jump Street star lopped off 40 pounds this year - he's barely recognizable now, especially compared to his look in The Sitter (which had its released delayed several months). Fans were worried that Jonah wouldn't be as funny if he lost weight - we'll have to see for sure when 21 Jump Street comes...

Mystery movie "Sherlock Holmes: A Game Of Shadows" has been crowned king of the box office after raking in $40 million at the weekend.

The Jude Law and Robert Downey, Jr. detective film premiered at the top spot, ahead of animated family film "Alvin and the Chipmunks: Chipwrecked" at two with takings of $23.5 million and TomCruise's highly-anticipated "Mission: Impossible - Ghost Protocol," which debuted at three with earnings of $13 million.

Former number one New Year's Eve fell to number four ($7.4 million), while Jonah Hill's comedy "The Sitter" dropped three slots to number five ($4....

Star-studded romantic comedy "New Year's Eve" has crawled to the top of the box office chart in the slowest weekend of ticket sales in three years.

The movie, starring Robert De Niro, Halle Berry, Michelle Pfeiffer, Zac Efron, Ashton Kutcher and Katherine Heigl, grossed a weak $13.7 million in its opening weekend - a stark contrast to director Garry Marshall's last hit, 2010's "Valentine's Day," which also featured an ensemble cast and debuted with a healthy $56.3 million.

Jonah Hill's new funny film "The Sitter" opened in second with a lacklustre