Brad Pitt and Angelina Jolie put on a show of unity at the Directors Guild of America Awards (DGAs) on Saturday night.

The couple - who have been plagued by rumours they are set to split - turned up at the Los Angeles ceremony together, much to the surprise of other guests as Angelina wasn't expected to attend.

But she was keen to show her support to Brad, who presented the Feature Film Nomination Plaque to Quentin Tarantino, his director in 'Inglourious Basterds'.

An onlooker said: "Brad and Angelina were sitting next to each other at dinner at the DGAs. Brad had his arms folded.

Angie smiling at his jokes as he spoke about Quentin and his feature film nomination for 'Inglourious Basterds'.

He was all about being there for Quentin, but she was there to make her presence known."

However, the couple - who raise six children together - refused to walk the red carpet and weren't pictured together.

Last week, it was claimed they were set to call time on their five-year relationship after signing legal documents which divided their US$330 million fortune and custody of the children - adopted Maddox, eight, Pax, six, and Zahara, five, as well as biological kids, Shiloh, three, and 18-month-old twins Knox and Vivienne.

However, it was since been claimed they only signed the papers as a precaution and have no intention of separating.

Sources close to the couple insist "everything is fine" between them, while Angelina's father Jon Voight branded the reports "nonsense".