Mel Gibson & Wife Robyn Gibson — Officially Divorced

Mel Gibson and Robyn Gibson are officially single — a judge signed the divorce decree moments ago.

The only big change — Robyn is going back to her maiden name … so from now on it’s Robyn Moore.

As we reported, the couple’s been negotiating a financial settlement for over a year … and we’re told, it’s finally a done deal. There is no prenup.

The couple’s reported net worth is in the $900 million range — but sources tell us, it’s actually less.

Mel was represented by Larry Ginsberg.

Robyn — who was repped by disso-queen Laura Wasser — filed for divorce in 2009 following a three-year separation — shortly after learning Mel’s then GF Oksana Grigorieva was pregnant