Benedict Cumberbatch and Sophie Hunter are expected to get married Saturday, Valentine's Day.
Sources told Us Weekly and People magazine the pair will get married on the Isle of Wight in Britain.
The pair, who have dated since 2009, first got engaged in November. They announced their engagement with a very traditional posting in the Times of London.
"Mr B.T. Cumberbatch and Miss S.I. Hunter," it read. "The engagement is announced between Benedict, son of Wanda and Timothy Cumberbatch of London, and Sophie, daughter of Katharine Hunter of Edinburgh and Charles Hunter of London."
They announced Hunter's pregnancy early last month.