Knightley mulling over 'jeans and t-shirt' wedding

Keira Knightley may have a "jeans and t-shirt" wedding.

The 'Anna Karenina' actress - who is engaged to Klaxons musician James Righton - thinks it would be "pretty generous" if Chanel designer Karl Lagerfeld offered to create a gown for her, but is not sure if it would be the right choice yet as she hasn't started planning her nuptials.