The couple attended the Empire Awards in London last night and Luciana's baby bump was clearly visible under her black frock.
Matt, 37, was more than happy to chat about his growing family.
'At the moment I am Daddy and I have to make sure I work around the family and the time the kids are getting up and going to bed,' he told Us Weekly.
'Everything revolves around them.'
Matt is already dad to daughter Isabella, 1, and Alexia, 9, from Luciana's previous marriage.
He won Best Film for Bourne Ultimatum.
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