Carey Mulligan (who is actually 24) played Jenny in An Education. I thought she did an excellent job while she shared screen time with stars such as Peter Sarsgaard and Alfred Molina. Her performance was easily the best in the film. Do you think we'll see her making her rounds at the award shows in a few months?
Entertainment Weekly has already put Carey Mulligan on their "OscarWatch" list for 2010. At this link there is a short article about her and the film, as well as a 5 minute video interview with Mulligan about AN EDUCATION.
http://oscar-watch.ew.com/2009/09/29/meet-carey-mulligan-an-education-leading-lady/