Contrary to initial plans to start filming X-Men first class part 2 in late 2012, Jennifer Lawrence's involvement in the filming of part 2 of her blockbuster "The Hunger games" will delay X-men to January 2013.The Hunger games has gained 250 million dollars in only 2 weeks in the States marking a massive success, urging the producers to make the 2nd part of the trilogy to release next summer.Jennifer Lawrence is the main star in the movie, and she is also a huge part of X-men which would cause the delay as Matthew Vaughn wants all the original cast to return in the 2nd part.X-Men First Class was released last summer and received high praise both from the critics and the viewers. The movie also starred James McAvoy, Michael Fassbender and Nicholas Hoult.