In Pride and Prejudice - what are the ages of bennet sisters?

Jane Bennett is 22 at the beginning of the novel. Elizabeth is "not yet one and twenty" (20). Mary's age is somewhere between Elizabeth's and Kitty's, probably about 18. Kitty is 17 and Lydia is "but just turned 15."

The novel covers more than a year, but these ages come from Elizabeth's conversation with Lady Catherine (about the middle of the novel).