Edward Cullen proposes to Bella Swan in The Twilight Sage: Eclipse, but Kristen and Rob, 24, have no plans to walk down the aisle - yet.
'I've never been the girl who was growing up planning my wedding,' says Kristen, 20.
'A lot of girls do that with Barbies and stuff.
'I definitely want a family - that's important to me - but I'm not thinking about getting married young.'
Even so, Kristen does understand why Bella agrees to be Edward's bride - and can imagine her wedding dress.
'Bella would want something classic, simple and beautiful - white or cream,' she says.
'She doesn't want to get married but because it means so much to Edward she's going to go ahead with it - she's going to give him everything.
'It's going to be a beautiful and monumental wedding because he wants that.
'Usually it's the opposite. Usually the girl wants it. It's cute.'