Anne Hathaway was a day late for Matthew McConaughey's birthday party

Anne Hathaway was left red-faced when she showed up to her Interstellar co-star Matthew Mcconaughey's surprise birthday party a day late.

The movie star's wife Camila threw the bash for her man last November (13) at their home, and Hathaway admits she got her dates mixed up.

She tells Access Hollywood, "Very true to Matthew, he said, 'Come on in!' And I said, 'Surprise!' And he said, 'The party was last night'. I just wanted to die and then he said, 'Come on in, let me pour you a drink'.

"We hung out for nine hours. It was awesome. We had such a great night."