Sam Worthington's girlfriend expecting their first child

'Terminator Salvation' star Sam Worthington and his girlfriend Lara Bingle are expecting their first child together.

The couple have been facing pregnancy rumours for the past few months. Bingle, 27, appeared to strategically cover her baby bump with her leather jacket in NYC earlier this week, reported Us magazine.

The following day, the model made more waves when she was photographed holding her stomach while visiting a medical office.

The Avatar star, 38, and Bingle have been very private since they began dating in September 2013.