Other mistake: Once Lizzie leaves the castle of Mr. Darcy, skid marks from crew trucks can be identified on the country lane leading away from the castle, where she admired the statues Mr. Darcy had accumulated.
Other mistake: When Darcy proposes to Lizzie notice the clock on the mantle does not change time. Nor does the clock change time when the Bennetts are discussing having the militia leave town.
Answer: According to the book, at the beginning, Jane 22, Elizabeth 20, Mary between Elizabeth and Kitty so 18 or 19, Kitty 17, Lydia 15.
Myridon