The 30-year-old actress became the subject of speculation recently when a report in a magazine claimed that her brother had said during a comedy set that she was about to become a "new mother", reported Digital Spy.
Her rep has shot down the rumours, saying that the 'Les Miserables' star is expecting a baby with husband Adam Shulman.
The couple, who tied the knot in September 2012, do not yet have any children together.