Jennifer Aniston has rubbished claims that she is carrying John Mayer's baby.

The Friends star's rep denied any rumours of a pregnancy but failed to comment on the reasons behind the 'Johnnifer' reunion.

Jen's representation tells Entertainment Tonight, “Give me a break. She is NOT pregnant.”

The rumour mill has been in overdrive since Jen and John were first spotted dining at an Italian restaurant in New York.

The couple's romance was thought to be dead and buried in August but after several alleged dates and Jen's appearance at John's 31st birthday, the couple seem to be getting back together.

Stay tuned for the latest 'Johnnifer' news.

See Jen and John's romance in pictures here